diff --git a/.editorconfig b/.editorconfig
index df3f71f7..d2e5b066 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,7 +1,7 @@
+root = true
 # http://editorconfig.org/
 
 # top-most EditorConfig file
-root = true
 
 # all files
 [*]
@@ -32,6 +32,7 @@ resharper_csharp_blank_lines_around_field = 0
 resharper_csharp_blank_lines_around_invocable = 0
 resharper_csharp_blank_lines_around_type = 0
 resharper_csharp_int_align_comments = true
+resharper_csharp_keep_blank_lines_in_declarations = 1
 resharper_csharp_max_line_length = 368
 resharper_csharp_wrap_lines = false
 resharper_place_expr_accessor_on_single_line = true
diff --git a/Netch/Controllers/MainController.cs b/Netch/Controllers/MainController.cs
index 533fb891..7334709a 100644
--- a/Netch/Controllers/MainController.cs
+++ b/Netch/Controllers/MainController.cs
@@ -97,8 +97,8 @@ namespace Netch.Controllers
                 if (!await StartMode(mode))
                     throw new StartFailedException();
 
-                if (mode.TestNatRequired())
-                    NatTest();
+                _ = Task.Run(Bandwidth.NetTraffic);
+                _ = Task.Run(NatTest);
 
                 return true;
             }
@@ -210,7 +210,6 @@ namespace Netch.Controllers
             ServerController = null;
         }
 
-
         /// <summary>
         ///     检查端口是否被占用,
         ///     被占用则弹窗提示, 确认后抛出异常
@@ -239,6 +238,8 @@ namespace Netch.Controllers
         /// </summary>
         public static void NatTest()
         {
+            if (!Mode.TestNatRequired())
+                return;
             NttTested = false;
             Task.Run(() =>
             {
diff --git a/Netch/Forms/MainForm.Control.cs b/Netch/Forms/MainForm.Control.cs
deleted file mode 100644
index 68c3f7bc..00000000
--- a/Netch/Forms/MainForm.Control.cs
+++ /dev/null
@@ -1,124 +0,0 @@
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-using System.Windows.Forms;
-using Netch.Controllers;
-using Netch.Models;
-using Netch.Utils;
-
-namespace Netch.Forms
-{
-    public partial class Dummy
-    {
-    }
-
-    partial class MainForm
-    {
-        private bool _isFirstCloseWindow = true;
-
-        /// <summary>
-        ///     上一次下载的流量
-        /// </summary>
-        public ulong LastDownloadBandwidth;
-
-        /// <summary>
-        ///     上一次上传的流量
-        /// </summary>
-        public ulong LastUploadBandwidth;
-
-        private async void ControlFun()
-        {
-            Configuration.Save();
-            if (State == State.Waiting || State == State.Stopped)
-            {
-                // 服务器、模式 需选择
-                if (!(ServerComboBox.SelectedItem is Server server))
-                {
-                    MessageBoxX.Show(i18N.Translate("Please select a server first"));
-                    return;
-                }
-
-                if (!(ModeComboBox.SelectedItem is Models.Mode mode))
-                {
-                    MessageBoxX.Show(i18N.Translate("Please select a mode first"));
-                    return;
-                }
-
-                // 清除模式搜索框文本选择
-                ModeComboBox.Select(0, 0);
-
-                State = State.Starting;
-
-                if (await MainController.Start(server, mode))
-                {
-                    State = State.Started;
-                    _ = Task.Run(() => { Bandwidth.NetTraffic(); });
-                    // 如果勾选启动后最小化
-                    if (Global.Settings.MinimizeWhenStarted)
-                    {
-                        WindowState = FormWindowState.Minimized;
-
-                        if (_isFirstCloseWindow)
-                        {
-                            // 显示提示语
-                            NotifyTip(i18N.Translate("Netch is now minimized to the notification bar, double click this icon to restore."));
-                            _isFirstCloseWindow = false;
-                        }
-
-                        Hide();
-                    }
-
-                    if (Global.Settings.StartedTcping)
-                        // 自动检测延迟
-                        _ = Task.Run(() =>
-                        {
-                            while (State == State.Started)
-                            {
-                                server.Test();
-                                // 重绘 ServerComboBox
-                                ServerComboBox.Invalidate();
-
-                                Thread.Sleep(Global.Settings.StartedTcping_Interval * 1000);
-                            }
-                        });
-                }
-                else
-                {
-                    State = State.Stopped;
-                    StatusText(i18N.Translate("Start failed"));
-                }
-            }
-            else
-            {
-                // 停止
-                State = State.Stopping;
-                await MainController.Stop();
-                State = State.Stopped;
-            }
-        }
-
-        public void OnBandwidthUpdated(ulong download)
-        {
-            if (InvokeRequired)
-            {
-                BeginInvoke(new Action<ulong>(OnBandwidthUpdated), download);
-                return;
-            }
-
-            try
-            {
-                UsedBandwidthLabel.Text = $"{i18N.Translate("Used", ": ")}{Bandwidth.Compute(download)}";
-                //UploadSpeedLabel.Text = $"↑: {Utils.Bandwidth.Compute(upload - LastUploadBandwidth)}/s";
-                DownloadSpeedLabel.Text = $"↑↓: {Bandwidth.Compute(download - LastDownloadBandwidth)}/s";
-
-                //LastUploadBandwidth = upload;
-                LastDownloadBandwidth = download;
-                Refresh();
-            }
-            catch
-            {
-                // ignored
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/Netch/Forms/MainForm.MenuStrip.cs b/Netch/Forms/MainForm.MenuStrip.cs
deleted file mode 100644
index 93599f55..00000000
--- a/Netch/Forms/MainForm.MenuStrip.cs
+++ /dev/null
@@ -1,375 +0,0 @@
-using System;
-using System.IO;
-using System.Net;
-using System.Threading.Tasks;
-using System.Windows.Forms;
-using Netch.Controllers;
-using Netch.Forms.Mode;
-using Netch.Models;
-using Netch.Utils;
-
-namespace Netch.Forms
-{
-    partial class Dummy
-    {
-    }
-
-    partial class MainForm
-    {
-        #region MenuStrip
-
-        #region 服务器
-
-        private void ImportServersFromClipboardToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            var texts = Clipboard.GetText();
-            if (!string.IsNullOrWhiteSpace(texts))
-            {
-                var servers = ShareLink.ParseText(texts);
-                Global.Settings.Server.AddRange(servers);
-                NotifyTip(i18N.TranslateFormat("Import {0} server(s) form Clipboard", servers.Count));
-
-                InitServer();
-                Configuration.Save();
-            }
-        }
-
-        private void AddServerToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            var s = ((ToolStripMenuItem) sender).Text;
-
-            var start = s.IndexOf("[", StringComparison.Ordinal) + 1;
-            var end = s.IndexOf("]", start, StringComparison.Ordinal);
-            var result = s.Substring(start, end - start);
-
-            Hide();
-            ServerHelper.GetUtilByFullName(result).Create();
-
-            InitServer();
-            Configuration.Save();
-            Show();
-        }
-
-        #endregion
-
-        #region 模式
-
-        private void CreateProcessModeToolStripButton_Click(object sender, EventArgs e)
-        {
-            Hide();
-            new Process().ShowDialog();
-            Show();
-        }
-
-        private void ReloadModesToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Enabled = false;
-            try
-            {
-                ModeHelper.Load();
-                InitMode();
-                NotifyTip(i18N.Translate("Modes have been reload"));
-            }
-            catch (Exception)
-            {
-                // ignored
-            }
-            finally
-            {
-                Enabled = true;
-            }
-        }
-
-        #endregion
-
-        #region 订阅
-
-        private void ManageSubscribeLinksToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Hide();
-            new SubscribeForm().ShowDialog();
-            InitServer();
-            Show();
-        }
-
-        private async void UpdateServersFromSubscribeLinksToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Global.Settings.UseProxyToUpdateSubscription = false;
-            await UpdateServersFromSubscribe();
-        }
-
-        private async void UpdateServersFromSubscribeLinksWithProxyToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Global.Settings.UseProxyToUpdateSubscription = true;
-            await UpdateServersFromSubscribe(true);
-        }
-
-        private async Task UpdateServersFromSubscribe(bool useProxy = false)
-        {
-            void DisableItems(bool v)
-            {
-                MenuStrip.Enabled = ConfigurationGroupBox.Enabled = ProfileGroupBox.Enabled = ControlButton.Enabled = v;
-            }
-
-            if (useProxy && ServerComboBox.SelectedIndex == -1)
-            {
-                MessageBoxX.Show(i18N.Translate("Please select a server first"));
-                return;
-            }
-
-            if (Global.Settings.SubscribeLink.Count <= 0)
-            {
-                MessageBoxX.Show(i18N.Translate("No subscription link"));
-                return;
-            }
-
-            StatusText(i18N.Translate("Starting update subscription"));
-            DisableItems(false);
-            try
-            {
-                string proxyServer = null;
-                if (useProxy)
-                {
-                    var mode = new Models.Mode
-                    {
-                        Remark = "ProxyUpdate",
-                        Type = 5
-                    };
-                    await MainController.Start(ServerComboBox.SelectedItem as Server, mode);
-                    proxyServer = $"http://127.0.0.1:{Global.Settings.HTTPLocalPort}";
-                }
-
-                await Subscription.UpdateServersAsync(proxyServer);
-
-                InitServer();
-                Configuration.Save();
-                StatusText(i18N.Translate("Subscription updated"));
-            }
-            catch (Exception)
-            {
-                // ignored
-            }
-            finally
-            {
-                if (useProxy)
-                    try
-                    {
-                        await MainController.Stop();
-                    }
-                    catch
-                    {
-                        // ignored
-                    }
-
-                DisableItems(true);
-            }
-        }
-
-        #endregion
-
-        #region 选项
-
-        private void CheckForUpdatesToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Task.Run(() =>
-            {
-                void OnNewVersionNotFound(object o, EventArgs args)
-                {
-                    UpdateChecker.NewVersionNotFound -= OnNewVersionNotFound;
-                    NotifyTip(i18N.Translate("Already latest version"));
-                }
-
-                void OnNewVersionFoundFailed(object o, EventArgs args)
-                {
-                    UpdateChecker.NewVersionFoundFailed -= OnNewVersionFoundFailed;
-                    NotifyTip(i18N.Translate("New version found failed"), info: false);
-                }
-
-                UpdateChecker.NewVersionNotFound += OnNewVersionNotFound;
-                UpdateChecker.NewVersionFoundFailed += OnNewVersionFoundFailed;
-                CheckUpdate();
-            });
-        }
-
-        private void OpenDirectoryToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Utils.Utils.Open(".\\");
-        }
-
-        private async void CleanDNSCacheToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            try
-            {
-                await Task.Run(() =>
-                {
-                    NativeMethods.FlushDNSResolverCache();
-                    DNS.Cache.Clear();
-                });
-
-                NotifyTip(i18N.Translate("DNS cache cleanup succeeded"));
-            }
-            catch (Exception)
-            {
-                // ignored
-            }
-            finally
-            {
-                StatusText();
-            }
-        }
-
-        private void updateACLWithProxyToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            UpdateACL(true);
-        }
-
-        private void updateACLToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            UpdateACL(false);
-        }
-
-        private async void UpdateACL(bool useProxy)
-        {
-            if (useProxy && ServerComboBox.SelectedIndex == -1)
-            {
-                MessageBoxX.Show(i18N.Translate("Please select a server first"));
-                return;
-            }
-
-            Enabled = false;
-            StatusText(i18N.TranslateFormat("Updating {0}", "ACL"));
-            try
-            {
-                if (useProxy)
-                {
-                    var mode = new Models.Mode
-                    {
-                        Remark = "ProxyUpdate",
-                        Type = 5
-                    };
-                    State = State.Starting;
-                    await MainController.Start(ServerComboBox.SelectedItem as Server, mode);
-                }
-
-                var req = WebUtil.CreateRequest(Global.Settings.ACL);
-                if (useProxy)
-                    req.Proxy = new WebProxy($"http://127.0.0.1:{Global.Settings.HTTPLocalPort}");
-
-                await WebUtil.DownloadFileAsync(req, Path.Combine(Global.NetchDir, "bin\\default.acl"));
-                NotifyTip(i18N.Translate("ACL updated successfully"));
-            }
-            catch (Exception e)
-            {
-                NotifyTip(i18N.Translate("ACL update failed") + "\n" + e.Message, info: false);
-                Logging.Error("更新 ACL 失败！" + e);
-            }
-            finally
-            {
-                if (useProxy)
-                {
-                    await MainController.Stop();
-                    State = State.Stopped;
-                }
-
-                StatusText();
-                Enabled = true;
-            }
-        }
-
-        private async void updatePACToolStripMenuItem_Click(object sender, EventArgs eventArgs)
-        {
-            Enabled = false;
-
-            StatusText(i18N.TranslateFormat("Updating {0}", "PAC"));
-            try
-            {
-                var req = WebUtil.CreateRequest(Global.Settings.PAC);
-
-                var pac = Path.Combine(Global.NetchDir, "bin\\pac.txt");
-
-                await WebUtil.DownloadFileAsync(req, pac);
-
-                NotifyTip(i18N.Translate("PAC updated successfully"));
-            }
-            catch (Exception e)
-            {
-                NotifyTip(i18N.Translate("PAC update failed") + "\n" + e.Message, info: false);
-                Logging.Error("更新 PAC 失败！" + e);
-            }
-            finally
-            {
-                StatusText();
-                Enabled = true;
-            }
-        }
-
-        private async void UninstallServiceToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Enabled = false;
-            StatusText(i18N.TranslateFormat("Uninstalling {0}", "NF Service"));
-            try
-            {
-                await Task.Run(() =>
-                {
-                    if (NFController.UninstallDriver())
-                        NotifyTip(i18N.TranslateFormat("{0} has been uninstalled", "NF Service"));
-                });
-            }
-            finally
-            {
-                StatusText();
-                Enabled = true;
-            }
-        }
-
-        private async void UninstallTapDriverToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Enabled = false;
-            StatusText(i18N.TranslateFormat("Uninstalling {0}", "TUN/TAP driver"));
-            try
-            {
-                await Task.Run(TUNTAP.deltapall);
-                NotifyTip(i18N.TranslateFormat("{0} has been uninstalled", "TUN/TAP driver"));
-            }
-            catch (Exception exception)
-            {
-                Logging.Error($"卸载 TUN/TAP 适配器失败: {exception}");
-            }
-            finally
-            {
-                StatusText();
-                Enabled = true;
-            }
-        }
-
-        #endregion
-
-
-        /// <summary>
-        ///     菜单栏强制退出
-        /// </summary>
-        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Exit(true);
-        }
-
-        private void VersionLabel_Click(object sender, EventArgs e)
-        {
-            Utils.Utils.Open($"https://github.com/{UpdateChecker.Owner}/{UpdateChecker.Repo}/releases");
-        }
-
-        private void AboutToolStripButton_Click(object sender, EventArgs e)
-        {
-            Hide();
-            new AboutForm().ShowDialog();
-            Show();
-        }
-
-        private void fAQToolStripMenuItem_Click(object sender, EventArgs e)
-        {
-            Utils.Utils.Open("https://netch.org/#/docs/zh-CN/faq");
-        }
-
-        #endregion
-    }
-}
\ No newline at end of file
diff --git a/Netch/Forms/MainForm.Misc.cs b/Netch/Forms/MainForm.Misc.cs
deleted file mode 100644
index 346841cf..00000000
--- a/Netch/Forms/MainForm.Misc.cs
+++ /dev/null
@@ -1,52 +0,0 @@
-using System;
-using System.Linq;
-using System.Net;
-using System.Windows.Forms;
-using Netch.Controllers;
-using Netch.Utils;
-
-namespace Netch.Forms
-{
-    partial class MainForm
-    {
-        private void CheckUpdate()
-        {
-            UpdateChecker.NewVersionFound += (_, _) =>
-            {
-                NotifyTip($"{i18N.Translate(@"New version available", ": ")}{UpdateChecker.LatestVersionNumber}");
-                NewVersionLabel.Visible = true;
-            };
-            UpdateChecker.Check(Global.Settings.CheckBetaUpdate);
-        }
-
-        private async void NewVersionLabel_Click(object sender, EventArgs e)
-        {
-            if (!UpdateChecker.LatestRelease.assets.Any())
-            {
-                Utils.Utils.Open(UpdateChecker.LatestVersionUrl);
-                return;
-            }
-
-            if (MessageBoxX.Show(i18N.Translate("Download and install now?"), confirm: true) != DialogResult.OK)
-                return;
-            NotifyTip(i18N.Translate("Start downloading new version"));
-
-            NewVersionLabel.Enabled = false;
-            NewVersionLabel.Text = "...";
-            try
-            {
-                void OnDownloadProgressChanged(object o1, DownloadProgressChangedEventArgs args)
-                {
-                    BeginInvoke(new Action(() => { NewVersionLabel.Text = $"{args.ProgressPercentage}%"; }));
-                }
-
-                await UpdateChecker.UpdateNetch(OnDownloadProgressChanged);
-            }
-            catch (Exception exception)
-            {
-                Logging.Error(exception.Message);
-                NotifyTip(exception.Message);
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/Netch/Forms/MainForm.Profile.cs b/Netch/Forms/MainForm.Profile.cs
deleted file mode 100644
index 4b82baf8..00000000
--- a/Netch/Forms/MainForm.Profile.cs
+++ /dev/null
@@ -1,187 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Drawing;
-using System.Linq;
-using System.Threading.Tasks;
-using System.Windows.Forms;
-using Netch.Models;
-using Netch.Utils;
-
-namespace Netch.Forms
-{
-    public partial class Dummy
-    {
-    }
-
-    partial class MainForm
-    {
-        private int _configurationGroupBoxHeight;
-        private int _profileConfigurationHeight;
-
-        private void InitProfile()
-        {
-            // Clear
-            foreach (var button in ProfileButtons)
-                button.Dispose();
-
-            ProfileButtons.Clear();
-            ProfileTable.ColumnStyles.Clear();
-            ProfileTable.RowStyles.Clear();
-
-            var numProfile = Global.Settings.ProfileCount;
-            if (numProfile == 0)
-            {
-                // Hide Profile GroupBox, Change window size
-                configLayoutPanel.RowStyles[2].SizeType = SizeType.Percent;
-                configLayoutPanel.RowStyles[2].Height = 0;
-                ProfileGroupBox.Visible = false;
-
-                ConfigurationGroupBox.Size = new Size(ConfigurationGroupBox.Size.Width, _configurationGroupBoxHeight - _profileConfigurationHeight);
-            }
-            else
-            {
-                // Load Profiles
-                ProfileTable.ColumnCount = numProfile;
-
-                while (Global.Settings.Profiles.Count < numProfile)
-                {
-                    Global.Settings.Profiles.Add(new Profile());
-                }
-
-                for (var i = 0; i < numProfile; ++i)
-                {
-                    var b = new Button();
-                    b.Click += ProfileButton_Click;
-                    b.Dock = DockStyle.Fill;
-                    b.Text = !Global.Settings.Profiles[i].IsDummy ? Global.Settings.Profiles[i].ProfileName : i18N.Translate("None");
-
-                    ProfileTable.Controls.Add(b, i, 0);
-                    ProfileButtons.Add(b);
-                }
-
-                // equal column
-                for (var i = 1; i <= ProfileTable.RowCount; i++)
-                {
-                    ProfileTable.RowStyles.Add(new RowStyle(SizeType.Percent, 1));
-                }
-
-                for (var i = 1; i <= ProfileTable.ColumnCount; i++)
-                {
-                    ProfileTable.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 1));
-                }
-
-                configLayoutPanel.RowStyles[2].SizeType = SizeType.AutoSize;
-                ProfileGroupBox.Visible = true;
-                ConfigurationGroupBox.Size = new Size(ConfigurationGroupBox.Size.Width, _configurationGroupBoxHeight);
-            }
-        }
-
-        private void LoadProfile(int index)
-        {
-            var p = Global.Settings.Profiles[index];
-            ProfileNameText.Text = p.ProfileName;
-            ModeComboBox.ResetCompletionList();
-
-            if (p.IsDummy)
-                throw new Exception("Profile not found.");
-
-            var server = ServerComboBox.Items.Cast<Server>().FirstOrDefault(s => s.Remark.Equals(p.ServerRemark));
-            var mode = ModeComboBox.Items.Cast<Models.Mode>().FirstOrDefault(m => m.Remark.Equals(p.ModeRemark));
-
-            if (server == null)
-            {
-                throw new Exception("Server not found.");
-            }
-
-            if (mode == null)
-            {
-                throw new Exception("Mode not found.");
-            }
-
-            ServerComboBox.SelectedItem = server;
-            ModeComboBox.SelectedItem = mode;
-        }
-
-        private void SaveProfile(int index)
-        {
-            var selectedServer = (Server) ServerComboBox.SelectedItem;
-            var selectedMode = (Models.Mode) ModeComboBox.SelectedItem;
-            var name = ProfileNameText.Text;
-
-            Global.Settings.Profiles[index] = new Profile(selectedServer, selectedMode, name);
-        }
-
-        private void RemoveProfile(int index)
-        {
-            Global.Settings.Profiles[index] = new Profile();
-        }
-
-
-        private List<Button> ProfileButtons = new List<Button>();
-
-        private async void ProfileButton_Click(object sender, EventArgs e)
-        {
-            var index = ProfileButtons.IndexOf((Button) sender);
-
-            if (ModifierKeys == Keys.Control)
-            {
-                if (ServerComboBox.SelectedIndex == -1)
-                {
-                    MessageBoxX.Show(i18N.Translate("Please select a server first"));
-                }
-                else if (ModeComboBox.SelectedIndex == -1)
-                {
-                    MessageBoxX.Show(i18N.Translate("Please select a mode first"));
-                }
-                else if (ProfileNameText.Text == "")
-                {
-                    MessageBoxX.Show(i18N.Translate("Please enter a profile name first"));
-                }
-                else
-                {
-                    SaveProfile(index);
-                    ProfileButtons[index].Text = ProfileNameText.Text;
-                }
-
-                return;
-            }
-
-            if (Global.Settings.Profiles[index].IsDummy)
-            {
-                MessageBoxX.Show(
-                    i18N.Translate("No saved profile here. Save a profile first by Ctrl+Click on the button"));
-                return;
-            }
-
-            if (ModifierKeys == Keys.Shift)
-            {
-                if (MessageBoxX.Show(i18N.Translate("Remove this Profile?"), confirm: true) != DialogResult.OK) return;
-                RemoveProfile(index);
-                ProfileButtons[index].Text = i18N.Translate("None");
-                return;
-            }
-
-            try
-            {
-                LoadProfile(index);
-            }
-            catch (Exception exception)
-            {
-                MessageBoxX.Show(exception.Message, LogLevel.ERROR);
-                return;
-            }
-
-            // start the profile
-            ControlFun();
-            if (State == State.Stopping || State == State.Stopped)
-            {
-                while (State != State.Stopped)
-                {
-                    await Task.Delay(250);
-                }
-
-                ControlFun();
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/Netch/Forms/MainForm.Server_Mode.cs b/Netch/Forms/MainForm.Server_Mode.cs
deleted file mode 100644
index 5fc4bb55..00000000
--- a/Netch/Forms/MainForm.Server_Mode.cs
+++ /dev/null
@@ -1,152 +0,0 @@
-using System;
-using System.Drawing;
-using System.Linq;
-using System.Windows.Forms;
-using Netch.Models;
-using Netch.Utils;
-
-namespace Netch.Forms
-{
-    public partial class Dummy
-    {
-    }
-
-    partial class MainForm
-    {
-        /// <summary>
-        ///     Init at <see cref="MainForm_Load" />
-        /// </summary>
-        private int _eWidth;
-
-        private void ComboBox_DrawItem(object sender, DrawItemEventArgs e)
-        {
-            try
-            {
-                if (!(sender is ComboBox cbx))
-                    return;
-
-                // 绘制背景颜色
-                e.Graphics.FillRectangle(new SolidBrush(Color.White), e.Bounds);
-
-                if (e.Index < 0) return;
-
-                // 绘制 备注/名称 字符串
-                e.Graphics.DrawString(cbx.Items[e.Index].ToString(), cbx.Font, new SolidBrush(Color.Black), e.Bounds);
-
-                switch (cbx.Items[e.Index])
-                {
-                    case Server item:
-                    {
-                        // 计算延迟底色
-                        SolidBrush brush;
-                        if (item.Delay > 200)
-                            brush = new SolidBrush(Color.Red);
-                        else if (item.Delay > 80)
-                            brush = new SolidBrush(Color.Yellow);
-                        else if (item.Delay >= 0)
-                            brush = new SolidBrush(Color.FromArgb(50, 255, 56));
-                        else
-                            brush = new SolidBrush(Color.Gray);
-
-                        // 绘制延迟底色
-                        e.Graphics.FillRectangle(brush, _eWidth * 9, e.Bounds.Y, _eWidth, e.Bounds.Height);
-
-                        // 绘制延迟字符串
-                        e.Graphics.DrawString(item.Delay.ToString(), cbx.Font, new SolidBrush(Color.Black),
-                            _eWidth * 9 + _eWidth / 30, e.Bounds.Y);
-                        break;
-                    }
-                    case Models.Mode item:
-                    {
-                        // 绘制 模式Box 底色
-                        e.Graphics.FillRectangle(new SolidBrush(Color.Gray), _eWidth * 9, e.Bounds.Y, _eWidth,
-                            e.Bounds.Height);
-
-                        // 绘制 模式行数 字符串
-                        e.Graphics.DrawString(item.Rule.Count.ToString(), cbx.Font, new SolidBrush(Color.Black),
-                            _eWidth * 9 + _eWidth / 30, e.Bounds.Y);
-                        break;
-                    }
-                }
-            }
-            catch (Exception)
-            {
-                // ignored
-            }
-        }
-
-        private void AddAddServerToolStripMenuItems()
-        {
-            foreach (var serversUtil in ServerHelper.ServerUtils.Where(i => !string.IsNullOrEmpty(i.FullName)))
-            {
-                var fullName = serversUtil.FullName;
-                var control = new ToolStripMenuItem
-                {
-                    Name = $"Add{fullName}ServerToolStripMenuItem",
-                    Size = new Size(259, 22),
-                    Text = i18N.TranslateFormat("Add [{0}] Server", fullName)
-                };
-                _mainFormText.Add(control.Name, new[] {"Add [{0}] Server", fullName});
-                control.Click += AddServerToolStripMenuItem_Click;
-                ServerToolStripMenuItem.DropDownItems.Add(control);
-            }
-        }
-
-        #region Server
-
-        private void InitServer()
-        {
-            var comboBoxInitialized = _comboBoxInitialized;
-            _comboBoxInitialized = false;
-
-            ServerComboBox.Items.Clear();
-            ServerComboBox.Items.AddRange(Global.Settings.Server.ToArray());
-            SelectLastServer();
-            _comboBoxInitialized = comboBoxInitialized;
-        }
-
-        public void SelectLastServer()
-        {
-            // 如果值合法，选中该位置
-            if (Global.Settings.ServerComboBoxSelectedIndex > 0 &&
-                Global.Settings.ServerComboBoxSelectedIndex < ServerComboBox.Items.Count)
-                ServerComboBox.SelectedIndex = Global.Settings.ServerComboBoxSelectedIndex;
-            // 如果值非法，且当前 ServerComboBox 中有元素，选择第一个位置
-            else if (ServerComboBox.Items.Count > 0)
-                ServerComboBox.SelectedIndex = 0;
-
-            // 如果当前 ServerComboBox 中没元素，不做处理
-        }
-
-        #endregion
-
-        #region Mode
-
-        public void InitMode()
-        {
-            var comboBoxInitialized = _comboBoxInitialized;
-            _comboBoxInitialized = false;
-
-            ModeComboBox.Items.Clear();
-            ModeComboBox.Items.AddRange(Global.Modes.ToArray());
-            ModeComboBox.Tag = null;
-            SelectLastMode();
-            _comboBoxInitialized = comboBoxInitialized;
-        }
-
-        public void SelectLastMode()
-        {
-            // 如果值合法，选中该位置
-            if (Global.Settings.ModeComboBoxSelectedIndex > 0 &&
-                Global.Settings.ModeComboBoxSelectedIndex < ModeComboBox.Items.Count)
-                ModeComboBox.SelectedIndex = Global.Settings.ModeComboBoxSelectedIndex;
-            // 如果值非法，且当前 ModeComboBox 中有元素，选择第一个位置
-            else if (ModeComboBox.Items.Count > 0)
-                ModeComboBox.SelectedIndex = 0;
-
-            // 如果当前 ModeComboBox 中没元素，不做处理
-        }
-
-        #endregion
-    }
-}
\ No newline at end of file
diff --git a/Netch/Forms/MainForm.Status.cs b/Netch/Forms/MainForm.Status.cs
deleted file mode 100644
index 841fc7f5..00000000
--- a/Netch/Forms/MainForm.Status.cs
+++ /dev/null
@@ -1,247 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Drawing;
-using System.Linq;
-using Netch.Models;
-using Netch.Utils;
-
-namespace Netch.Forms
-{
-    public partial class Dummy
-    {
-    }
-
-    partial class MainForm
-    {
-        private State _state = State.Waiting;
-
-        /// <summary>
-        ///     当前状态
-        /// </summary>
-        public State State
-        {
-            get => _state;
-            private set
-            {
-                void StartDisableItems(bool enabled)
-                {
-                    ServerComboBox.Enabled =
-                        ModeComboBox.Enabled =
-                            EditModePictureBox.Enabled =
-                                EditServerPictureBox.Enabled =
-                                    DeleteModePictureBox.Enabled =
-                                        DeleteServerPictureBox.Enabled = enabled;
-
-                    // 启动需要禁用的控件
-                    UninstallServiceToolStripMenuItem.Enabled =
-                        UpdateACLToolStripMenuItem.Enabled =
-                            updateACLWithProxyToolStripMenuItem.Enabled =
-                                updatePACToolStripMenuItem.Enabled =
-                                    UpdateServersFromSubscribeLinksToolStripMenuItem.Enabled =
-                                        UninstallTapDriverToolStripMenuItem.Enabled =
-                                            ReloadModesToolStripMenuItem.Enabled = enabled;
-                }
-
-                _state = value;
-
-                ServerHelper.Timer.Enabled = IsWaiting(_state);
-
-                StatusText();
-                switch (value)
-                {
-                    case State.Waiting:
-                        ControlButton.Enabled = true;
-                        ControlButton.Text = i18N.Translate("Start");
-
-                        break;
-                    case State.Starting:
-                        ControlButton.Enabled = false;
-                        ControlButton.Text = "...";
-
-                        ProfileGroupBox.Enabled = false;
-                        StartDisableItems(false);
-                        break;
-                    case State.Started:
-                        ControlButton.Enabled = true;
-                        ControlButton.Text = i18N.Translate("Stop");
-
-                        StatusTextAppend(StatusPortInfoText.Value);
-
-                        ProfileGroupBox.Enabled = true;
-
-                        break;
-                    case State.Stopping:
-                        ControlButton.Enabled = false;
-                        ControlButton.Text = "...";
-
-                        ProfileGroupBox.Enabled = false;
-                        BandwidthState(false);
-                        NatTypeStatusText();
-                        break;
-                    case State.Stopped:
-                        ControlButton.Enabled = true;
-                        ControlButton.Text = i18N.Translate("Start");
-
-                        LastUploadBandwidth = 0;
-                        LastDownloadBandwidth = 0;
-                        Bandwidth.Stop();
-
-                        ProfileGroupBox.Enabled = true;
-                        StartDisableItems(true);
-                        break;
-                    case State.Terminating:
-                        Dispose();
-                        Environment.Exit(Environment.ExitCode);
-                        return;
-                }
-            }
-        }
-
-        private bool IsWaiting()
-        {
-            return State == State.Waiting || State == State.Stopped;
-        }
-        private static bool IsWaiting(State state)
-        {
-            return state == State.Waiting || state == State.Stopped;
-        }
-
-        public void BandwidthState(bool state)
-        {
-            UsedBandwidthLabel.Visible /*= UploadSpeedLabel.Visible*/ = DownloadSpeedLabel.Visible = state;
-        }
-
-        public void NatTypeStatusText(string text = "", string country = "")
-        {
-            if (InvokeRequired)
-            {
-                BeginInvoke(new Action<string, string>(NatTypeStatusText), text, country);
-                return;
-            }
-
-            if (State != State.Started)
-            {
-                NatTypeStatusLabel.Text = "";
-                NatTypeStatusLabel.Visible = NatTypeStatusLightLabel.Visible = false;
-                return;
-            }
-
-            if (!string.IsNullOrEmpty(text))
-            {
-                NatTypeStatusLabel.Text = $"NAT{i18N.Translate(": ")}{text} {(country != string.Empty ? $"[{country}]" : "")}";
-
-                UpdateNatTypeLight(int.TryParse(text, out var natType) ? natType : -1);
-            }
-            else
-            {
-                NatTypeStatusLabel.Text = $@"NAT{i18N.Translate(": ", "Test failed")}";
-            }
-
-            NatTypeStatusLabel.Visible = true;
-        }
-
-        /// <summary>
-        ///     更新 NAT指示灯颜色
-        /// </summary>
-        /// <param name="natType"></param>
-        private void UpdateNatTypeLight(int natType = -1)
-        {
-            if (natType > 0 && natType < 5)
-            {
-                NatTypeStatusLightLabel.Visible = Global.Flags.IsWindows10Upper;
-                Color c;
-                switch (natType)
-                {
-                    case 1:
-                        c = Color.LimeGreen;
-                        break;
-                    case 2:
-                        c = Color.Yellow;
-                        break;
-                    case 3:
-                        c = Color.Red;
-                        break;
-                    case 4:
-                        c = Color.Black;
-                        break;
-                    default:
-                        c = Color.Black;
-                        break;
-                }
-
-                NatTypeStatusLightLabel.ForeColor = c;
-            }
-            else
-            {
-                NatTypeStatusLightLabel.Visible = false;
-            }
-        }
-
-        /// <summary>
-        ///     更新状态栏文本
-        /// </summary>
-        /// <param name="text"></param>
-        public void StatusText(string text = null)
-        {
-            if (InvokeRequired)
-            {
-                BeginInvoke(new Action<string>(StatusText), text);
-                return;
-            }
-
-            text ??= i18N.Translate(StateExtension.GetStatusString(State));
-            StatusLabel.Text = i18N.Translate("Status", ": ") + text;
-        }
-
-        public void StatusTextAppend(string text)
-        {
-            StatusLabel.Text += text;
-        }
-
-        public static class StatusPortInfoText
-        {
-            private static ushort? _socks5Port;
-            private static ushort? _httpPort;
-            private static bool _shareLan;
-
-            public static ushort HttpPort
-            {
-                set => _httpPort = value;
-            }
-
-            public static ushort Socks5Port
-            {
-                set => _socks5Port = value;
-            }
-
-            public static string Value
-            {
-                get
-                {
-                    var strings = new List<string>();
-
-                    if (_socks5Port != null)
-                        strings.Add($"Socks5 {i18N.Translate("Local Port", ": ")}{_socks5Port}");
-
-                    if (_httpPort != null)
-                        strings.Add($"HTTP {i18N.Translate("Local Port", ": ")}{_httpPort}");
-
-                    if (!strings.Any())
-                        return string.Empty;
-
-                    return $" ({(_shareLan ? i18N.Translate("Allow other Devices to connect") + " " : "")}{string.Join(" | ", strings)})";
-                }
-            }
-
-            public static void UpdateShareLan()
-            {
-                _shareLan = Global.Settings.LocalAddress != "127.0.0.1";
-            }
-
-            public static void Reset()
-            {
-                _httpPort = _socks5Port = null;
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/Netch/Forms/MainForm.cs b/Netch/Forms/MainForm.cs
index 95f6d09c..a00fa3a9 100644
--- a/Netch/Forms/MainForm.cs
+++ b/Netch/Forms/MainForm.cs
@@ -1,8 +1,11 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.Drawing;
 using System.IO;
 using System.Linq;
+using System.Net;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 using Microsoft.Win32;
@@ -15,6 +18,8 @@ namespace Netch.Forms
 {
     public partial class MainForm : Form
     {
+        #region Start
+
         private readonly Dictionary<string, object> _mainFormText = new();
 
         private bool _comboBoxInitialized;
@@ -23,6 +28,15 @@ namespace Netch.Forms
         {
             InitializeComponent();
 
+            AddAddServerToolStripMenuItems();
+
+            #region i18N Translations
+
+            _mainFormText.Add(UninstallServiceToolStripMenuItem.Name, new[] {"Uninstall {0}", "NF Service"});
+            _mainFormText.Add(UninstallTapDriverToolStripMenuItem.Name, new[] {"Uninstall {0}", "TUN/TAP driver"});
+
+            #endregion
+
             // 监听电源事件
             SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
 
@@ -43,22 +57,14 @@ namespace Netch.Forms
 
         private void MainForm_Load(object sender, EventArgs e)
         {
-            AddAddServerToolStripMenuItems();
-
-            #region i18N Translations
-
-            _mainFormText.Add(UninstallServiceToolStripMenuItem.Name, new[] {"Uninstall {0}", "NF Service"});
-            _mainFormText.Add(UninstallTapDriverToolStripMenuItem.Name, new[] {"Uninstall {0}", "TUN/TAP driver"});
-
-            #endregion
-
             OnlyInstance.Called += OnCalled;
-            // 计算 ComboBox绘制 目标宽度
-            _eWidth = ServerComboBox.Width / 10;
 
+            // 计算 ComboBox绘制 目标宽度
+            _comboBoxNumberBoxWidth = ServerComboBox.Width / 10;
+
+            InitServer();
             ModeHelper.Load();
             InitMode();
-            InitServer();
             _comboBoxInitialized = true;
 
             // 加载翻译
@@ -74,7 +80,7 @@ namespace Netch.Forms
 
             // 打开软件时启动加速，产生开始按钮点击事件
             if (Global.Settings.StartWhenOpened)
-                ControlButton.PerformClick();
+                ControlButton_Click(null, null);
 
             Task.Run(() =>
             {
@@ -83,7 +89,6 @@ namespace Netch.Forms
                     CheckUpdate();
             });
 
-
             Task.Run(async () =>
             {
                 // 检查订阅更新
@@ -91,78 +96,27 @@ namespace Netch.Forms
                     await UpdateServersFromSubscribe(Global.Settings.UseProxyToUpdateSubscription);
             });
         }
+        /// <summary>
+        ///     Init at <see cref="MainForm_Load" />
+        /// </summary>
+        private int _comboBoxNumberBoxWidth;
 
-        private void OnCalled(object sender, OnlyInstance.Commands e)
+        private void AddAddServerToolStripMenuItems()
         {
-            switch (e)
+            foreach (var serversUtil in ServerHelper.ServerUtils.Where(i => !string.IsNullOrEmpty(i.FullName)))
             {
-                case OnlyInstance.Commands.Show:
-                    NotifyIcon_MouseDoubleClick(null, null);
-                    break;
-                case OnlyInstance.Commands.Exit:
-                    Exit(true);
-                    break;
-                default:
-                    throw new ArgumentOutOfRangeException(nameof(e), e, null);
-            }
-        }
-
-
-        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
-        {
-            if (e.CloseReason == CloseReason.UserClosing && State != State.Terminating)
-            {
-                // 取消"关闭窗口"事件
-                e.Cancel = true; // 取消关闭窗体 
-
-                // 如果未勾选关闭窗口时退出，隐藏至右下角托盘图标
-                if (!Global.Settings.ExitWhenClosed)
+                var fullName = serversUtil.FullName;
+                var control = new ToolStripMenuItem
                 {
-                    // 使关闭时窗口向右下角缩小的效果
-                    WindowState = FormWindowState.Minimized;
-
-                    if (_isFirstCloseWindow)
-                    {
-                        // 显示提示语
-                        NotifyTip(i18N.Translate("Netch is now minimized to the notification bar, double click this icon to restore."));
-                        _isFirstCloseWindow = false;
-                    }
-
-                    Hide();
-                }
-                // 如果勾选了关闭时退出，自动点击退出按钮
-                else
-                {
-                    Exit();
-                }
+                    Name = $"Add{fullName}ServerToolStripMenuItem",
+                    Size = new Size(259, 22),
+                    Text = i18N.TranslateFormat("Add [{0}] Server", fullName)
+                };
+                _mainFormText.Add(control.Name, new[] {"Add [{0}] Server", fullName});
+                control.Click += AddServerToolStripMenuItem_Click;
+                ServerToolStripMenuItem.DropDownItems.Add(control);
             }
         }
-
-        private void ControlButton_Click(object sender, EventArgs e)
-        {
-            ControlFun();
-        }
-
-
-        private void SettingsButton_Click(object sender, EventArgs e)
-        {
-            Hide();
-            new SettingForm().ShowDialog();
-
-            if (i18N.LangCode != Global.Settings.Language)
-            {
-                i18N.Load(Global.Settings.Language);
-                InitText();
-                InitMode();
-                InitProfile();
-            }
-
-            if (ProfileButtons.Count != Global.Settings.ProfileCount)
-                InitProfile();
-
-            Show();
-        }
-
         private void InitText()
         {
             #region Record English
@@ -239,41 +193,474 @@ namespace Netch.Forms
             VersionLabel.Text = UpdateChecker.Version;
         }
 
-        private void Exit(bool forceExit = false)
-        {
-            if (!IsWaiting() && !Global.Settings.StopWhenExited && !forceExit)
-            {
-                MessageBoxX.Show(i18N.Translate("Please press Stop button first"));
+        #endregion
 
-                NotifyIcon_MouseDoubleClick(null, null);
+        #region Controls
+
+        #region MenuStrip
+
+        #region Server
+
+        private void ImportServersFromClipboardToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var texts = Clipboard.GetText();
+            if (!string.IsNullOrWhiteSpace(texts))
+            {
+                var servers = ShareLink.ParseText(texts);
+                Global.Settings.Server.AddRange(servers);
+                NotifyTip(i18N.TranslateFormat("Import {0} server(s) form Clipboard", servers.Count));
+
+                InitServer();
+                Configuration.Save();
+            }
+        }
+
+        private void AddServerToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var s = ((ToolStripMenuItem) sender).Text;
+
+            var start = s.IndexOf("[", StringComparison.Ordinal) + 1;
+            var end = s.IndexOf("]", start, StringComparison.Ordinal);
+            var result = s.Substring(start, end - start);
+
+            Hide();
+            ServerHelper.GetUtilByFullName(result).Create();
+
+            InitServer();
+            Configuration.Save();
+            Show();
+        }
+
+        #endregion
+
+        #region Mode
+
+        private void CreateProcessModeToolStripButton_Click(object sender, EventArgs e)
+        {
+            Hide();
+            new Process().ShowDialog();
+            Show();
+        }
+
+        private void ReloadModesToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Enabled = false;
+            try
+            {
+                ModeHelper.Load();
+                InitMode();
+                NotifyTip(i18N.Translate("Modes have been reload"));
+            }
+            catch (Exception)
+            {
+                // ignored
+            }
+            finally
+            {
+                Enabled = true;
+            }
+        }
+
+        #endregion
+
+        #region Subscription
+
+        private void ManageSubscribeLinksToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Hide();
+            new SubscribeForm().ShowDialog();
+            InitServer();
+            Show();
+        }
+
+        private async void UpdateServersFromSubscribeLinksToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Global.Settings.UseProxyToUpdateSubscription = false;
+            await UpdateServersFromSubscribe();
+        }
+
+        private async void UpdateServersFromSubscribeLinksWithProxyToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Global.Settings.UseProxyToUpdateSubscription = true;
+            await UpdateServersFromSubscribe(true);
+        }
+
+        private async Task UpdateServersFromSubscribe(bool useProxy = false)
+        {
+            void DisableItems(bool v)
+            {
+                MenuStrip.Enabled = ConfigurationGroupBox.Enabled = ProfileGroupBox.Enabled = ControlButton.Enabled = v;
+            }
+
+            if (useProxy && ServerComboBox.SelectedIndex == -1)
+            {
+                MessageBoxX.Show(i18N.Translate("Please select a server first"));
                 return;
             }
 
+            if (Global.Settings.SubscribeLink.Count <= 0)
+            {
+                MessageBoxX.Show(i18N.Translate("No subscription link"));
+                return;
+            }
+
+            StatusText(i18N.Translate("Starting update subscription"));
+            DisableItems(false);
+            try
+            {
+                string proxyServer = null;
+                if (useProxy)
+                {
+                    var mode = new Models.Mode
+                    {
+                        Remark = "ProxyUpdate",
+                        Type = 5
+                    };
+                    await MainController.Start(ServerComboBox.SelectedItem as Server, mode);
+                    proxyServer = $"http://127.0.0.1:{Global.Settings.HTTPLocalPort}";
+                }
+
+                await Subscription.UpdateServersAsync(proxyServer);
+
+                InitServer();
+                Configuration.Save();
+                StatusText(i18N.Translate("Subscription updated"));
+            }
+            catch (Exception)
+            {
+                // ignored
+            }
+            finally
+            {
+                if (useProxy)
+                    try
+                    {
+                        await MainController.Stop();
+                    }
+                    catch
+                    {
+                        // ignored
+                    }
+
+                DisableItems(true);
+            }
+        }
+
+        #endregion
+
+        #region Options
+
+        private void CheckForUpdatesToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Task.Run(() =>
+            {
+                void OnNewVersionNotFound(object o, EventArgs args)
+                {
+                    UpdateChecker.NewVersionNotFound -= OnNewVersionNotFound;
+                    NotifyTip(i18N.Translate("Already latest version"));
+                }
+
+                void OnNewVersionFoundFailed(object o, EventArgs args)
+                {
+                    UpdateChecker.NewVersionFoundFailed -= OnNewVersionFoundFailed;
+                    NotifyTip(i18N.Translate("New version found failed"), info: false);
+                }
+
+                UpdateChecker.NewVersionNotFound += OnNewVersionNotFound;
+                UpdateChecker.NewVersionFoundFailed += OnNewVersionFoundFailed;
+                CheckUpdate();
+            });
+        }
+
+        private void OpenDirectoryToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Utils.Utils.Open(".\\");
+        }
+
+        private async void CleanDNSCacheToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                await Task.Run(() =>
+                {
+                    NativeMethods.FlushDNSResolverCache();
+                    DNS.Cache.Clear();
+                });
+
+                NotifyTip(i18N.Translate("DNS cache cleanup succeeded"));
+            }
+            catch (Exception)
+            {
+                // ignored
+            }
+            finally
+            {
+                StatusText();
+            }
+        }
+
+        private void updateACLWithProxyToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            UpdateACL(true);
+        }
+
+        private void updateACLToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            UpdateACL(false);
+        }
+
+        private async void UpdateACL(bool useProxy)
+        {
+            if (useProxy && ServerComboBox.SelectedIndex == -1)
+            {
+                MessageBoxX.Show(i18N.Translate("Please select a server first"));
+                return;
+            }
+
+            Enabled = false;
+            StatusText(i18N.TranslateFormat("Updating {0}", "ACL"));
+            try
+            {
+                if (useProxy)
+                {
+                    var mode = new Models.Mode
+                    {
+                        Remark = "ProxyUpdate",
+                        Type = 5
+                    };
+                    State = State.Starting;
+                    await MainController.Start(ServerComboBox.SelectedItem as Server, mode);
+                }
+
+                var req = WebUtil.CreateRequest(Global.Settings.ACL);
+                if (useProxy)
+                    req.Proxy = new WebProxy($"http://127.0.0.1:{Global.Settings.HTTPLocalPort}");
+
+                await WebUtil.DownloadFileAsync(req, Path.Combine(Global.NetchDir, "bin\\default.acl"));
+                NotifyTip(i18N.Translate("ACL updated successfully"));
+            }
+            catch (Exception e)
+            {
+                NotifyTip(i18N.Translate("ACL update failed") + "\n" + e.Message, info: false);
+                Logging.Error("更新 ACL 失败！" + e);
+            }
+            finally
+            {
+                if (useProxy)
+                {
+                    await MainController.Stop();
+                    State = State.Stopped;
+                }
+
+                StatusText();
+                Enabled = true;
+            }
+        }
+
+        private async void updatePACToolStripMenuItem_Click(object sender, EventArgs eventArgs)
+        {
+            Enabled = false;
+
+            StatusText(i18N.TranslateFormat("Updating {0}", "PAC"));
+            try
+            {
+                var req = WebUtil.CreateRequest(Global.Settings.PAC);
+
+                var pac = Path.Combine(Global.NetchDir, "bin\\pac.txt");
+
+                await WebUtil.DownloadFileAsync(req, pac);
+
+                NotifyTip(i18N.Translate("PAC updated successfully"));
+            }
+            catch (Exception e)
+            {
+                NotifyTip(i18N.Translate("PAC update failed") + "\n" + e.Message, info: false);
+                Logging.Error("更新 PAC 失败！" + e);
+            }
+            finally
+            {
+                StatusText();
+                Enabled = true;
+            }
+        }
+
+        private async void UninstallServiceToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Enabled = false;
+            StatusText(i18N.TranslateFormat("Uninstalling {0}", "NF Service"));
+            try
+            {
+                await Task.Run(() =>
+                {
+                    if (NFController.UninstallDriver())
+                        NotifyTip(i18N.TranslateFormat("{0} has been uninstalled", "NF Service"));
+                });
+            }
+            finally
+            {
+                StatusText();
+                Enabled = true;
+            }
+        }
+
+        private async void UninstallTapDriverToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Enabled = false;
+            StatusText(i18N.TranslateFormat("Uninstalling {0}", "TUN/TAP driver"));
+            try
+            {
+                await Task.Run(TUNTAP.deltapall);
+                NotifyTip(i18N.TranslateFormat("{0} has been uninstalled", "TUN/TAP driver"));
+            }
+            catch (Exception exception)
+            {
+                Logging.Error($"卸载 TUN/TAP 适配器失败: {exception}");
+            }
+            finally
+            {
+                StatusText();
+                Enabled = true;
+            }
+        }
+
+        #endregion
+
+        /// <summary>
+        ///     菜单栏强制退出
+        /// </summary>
+        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Exit(true);
+        }
+
+        private void VersionLabel_Click(object sender, EventArgs e)
+        {
+            Utils.Utils.Open($"https://github.com/{UpdateChecker.Owner}/{UpdateChecker.Repo}/releases");
+        }
+
+        private void AboutToolStripButton_Click(object sender, EventArgs e)
+        {
             Hide();
-            NotifyIcon.Visible = false;
+            new AboutForm().ShowDialog();
+            Show();
+        }
+
+        private void fAQToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            Utils.Utils.Open("https://netch.org/#/docs/zh-CN/faq");
+        }
+
+        #endregion
+
+        #region ControlButton
+
+        private async void ControlButton_Click(object sender, EventArgs e)
+        {
             if (!IsWaiting())
-                ControlFun();
+            {
+                // 停止
+                State = State.Stopping;
+                await MainController.Stop();
+                State = State.Stopped;
+                return;
+            }
 
             Configuration.Save();
 
-            foreach (var file in new[] {"data\\last.json", "data\\privoxy.conf"})
-                if (File.Exists(file))
-                    File.Delete(file);
+            // 服务器、模式 需选择
+            if (!(ServerComboBox.SelectedItem is Server server))
+            {
+                MessageBoxX.Show(i18N.Translate("Please select a server first"));
+                return;
+            }
 
-            State = State.Terminating;
+            if (!(ModeComboBox.SelectedItem is Models.Mode mode))
+            {
+                MessageBoxX.Show(i18N.Translate("Please select a mode first"));
+                return;
+            }
+
+            // 清除模式搜索框文本选择
+            ModeComboBox.Select(0, 0);
+
+            State = State.Starting;
+
+            if (!await MainController.Start(server, mode))
+            {
+                State = State.Stopped;
+                StatusText(i18N.Translate("Start failed"));
+                return;
+            }
+
+            State = State.Started;
+
+            if (Global.Settings.MinimizeWhenStarted)
+                Minimize();
+
+            if (Global.Settings.StartedTcping)
+                // 自动检测延迟
+                _ = Task.Run(() =>
+                {
+                    while (State == State.Started)
+                    {
+                        server.Test();
+                        // 重绘 ServerComboBox
+                        ServerComboBox.Refresh();
+
+                        Thread.Sleep(Global.Settings.StartedTcping_Interval * 1000);
+                    }
+                });
         }
 
-        private void ModeComboBox_SelectedIndexChanged(object sender, EventArgs o)
+        #endregion
+
+        #region SettingsButton
+
+        private void SettingsButton_Click(object sender, EventArgs e)
         {
-            if (!_comboBoxInitialized) return;
-            try
+            Hide();
+            new SettingForm().ShowDialog();
+
+            if (i18N.LangCode != Global.Settings.Language)
             {
-                Global.Settings.ModeComboBoxSelectedIndex = Global.Modes.IndexOf((Models.Mode) ModeComboBox.SelectedItem);
-            }
-            catch
-            {
-                Global.Settings.ModeComboBoxSelectedIndex = 0;
+                i18N.Load(Global.Settings.Language);
+                InitText();
+                InitMode();
+                InitProfile();
             }
+
+            if (ProfileButtons.Count != Global.Settings.ProfileCount)
+                InitProfile();
+
+            Show();
+        }
+
+        #endregion
+
+        #region Server
+
+        private void InitServer()
+        {
+            var comboBoxInitialized = _comboBoxInitialized;
+            _comboBoxInitialized = false;
+
+            ServerComboBox.Items.Clear();
+            ServerComboBox.Items.AddRange(Global.Settings.Server.ToArray());
+            SelectLastServer();
+            _comboBoxInitialized = comboBoxInitialized;
+        }
+
+        public void SelectLastServer()
+        {
+            // 如果值合法，选中该位置
+            if (Global.Settings.ServerComboBoxSelectedIndex > 0 &&
+                Global.Settings.ServerComboBoxSelectedIndex < ServerComboBox.Items.Count)
+                ServerComboBox.SelectedIndex = Global.Settings.ServerComboBoxSelectedIndex;
+            // 如果值非法，且当前 ServerComboBox 中有元素，选择第一个位置
+            else if (ServerComboBox.Items.Count > 0)
+                ServerComboBox.SelectedIndex = 0;
+
+            // 如果当前 ServerComboBox 中没元素，不做处理
         }
 
         private void ServerComboBox_SelectedIndexChanged(object sender, EventArgs o)
@@ -282,44 +669,6 @@ namespace Netch.Forms
             Global.Settings.ServerComboBoxSelectedIndex = ServerComboBox.SelectedIndex;
         }
 
-        private void NatTypeStatusLabel_Click(object sender, EventArgs e)
-        {
-            if (_state == State.Started && MainController.NttTested)
-                MainController.NatTest();
-        }
-
-        #region MISC
-
-        private bool _resumeFlag;
-
-        /// <summary>
-        ///     监听电源事件，自动重启Netch服务
-        /// </summary>
-        /// <param name="sender"></param>
-        /// <param name="e"></param>
-        private void SystemEvents_PowerModeChanged(object sender, PowerModeChangedEventArgs e)
-        {
-            switch (e.Mode)
-            {
-                case PowerModes.Suspend: //操作系统即将挂起
-                    if (!IsWaiting())
-                    {
-                        _resumeFlag = true;
-                        Logging.Info("操作系统即将挂起，自动停止");
-                        ControlFun();
-                    }
-                    break;
-                case PowerModes.Resume: //操作系统即将从挂起状态继续
-                    if (_resumeFlag)
-                    {
-                        _resumeFlag = false;
-                        Logging.Info("操作系统即将从挂起状态继续，自动重启");
-                        ControlFun();
-                    }
-                    break;
-            }
-        }
-
         private void EditServerPictureBox_Click(object sender, EventArgs e)
         {
             // 当前ServerComboBox中至少有一项
@@ -356,6 +705,88 @@ namespace Netch.Forms
             }
         }
 
+        private void CopyLinkPictureBox_Click(object sender, EventArgs e)
+        {
+            // 当前ServerComboBox中至少有一项
+            if (ServerComboBox.SelectedIndex == -1)
+            {
+                MessageBoxX.Show(i18N.Translate("Please select a server first"));
+                return;
+            }
+
+            try
+            {
+                //听说巨硬BUG经常会炸，所以Catch一下 :D
+                var server = (Server) ServerComboBox.SelectedItem;
+                string text;
+                if (ModifierKeys == Keys.Control)
+                    text = ShareLink.GetNetchLink(server);
+                else
+                    text = ShareLink.GetShareLink(server);
+
+                Clipboard.SetText(text);
+            }
+            catch (Exception)
+            {
+                // ignored
+            }
+        }
+
+        private void DeleteServerPictureBox_Click(object sender, EventArgs e)
+        {
+            // 当前 ServerComboBox 中至少有一项
+            if (ServerComboBox.SelectedIndex == -1)
+            {
+                MessageBoxX.Show(i18N.Translate("Please select a server first"));
+                return;
+            }
+
+            Global.Settings.Server.Remove(ServerComboBox.SelectedItem as Server);
+            InitServer();
+        }
+
+        #endregion
+
+        #region Mode
+
+        public void InitMode()
+        {
+            var comboBoxInitialized = _comboBoxInitialized;
+            _comboBoxInitialized = false;
+
+            ModeComboBox.Items.Clear();
+            ModeComboBox.Items.AddRange(Global.Modes.ToArray());
+            ModeComboBox.Tag = null;
+            SelectLastMode();
+            _comboBoxInitialized = comboBoxInitialized;
+        }
+
+        public void SelectLastMode()
+        {
+            // 如果值合法，选中该位置
+            if (Global.Settings.ModeComboBoxSelectedIndex > 0 &&
+                Global.Settings.ModeComboBoxSelectedIndex < ModeComboBox.Items.Count)
+                ModeComboBox.SelectedIndex = Global.Settings.ModeComboBoxSelectedIndex;
+            // 如果值非法，且当前 ModeComboBox 中有元素，选择第一个位置
+            else if (ModeComboBox.Items.Count > 0)
+                ModeComboBox.SelectedIndex = 0;
+
+            // 如果当前 ModeComboBox 中没元素，不做处理
+        }
+
+        private void ModeComboBox_SelectedIndexChanged(object sender, EventArgs o)
+        {
+            if (!_comboBoxInitialized) return;
+            try
+            {
+                Global.Settings.ModeComboBoxSelectedIndex = Global.Modes.IndexOf((Models.Mode) ModeComboBox.SelectedItem);
+            }
+            catch
+            {
+                Global.Settings.ModeComboBoxSelectedIndex = 0;
+            }
+        }
+
         private void EditModePictureBox_Click(object sender, EventArgs e)
         {
             // 当前ModeComboBox中至少有一项
@@ -398,49 +829,597 @@ namespace Netch.Forms
             SelectLastMode();
         }
 
-        private void CopyLinkPictureBox_Click(object sender, EventArgs e)
+        #endregion
+
+        #region Profile
+
+        private int _configurationGroupBoxHeight;
+        private int _profileConfigurationHeight;
+
+        private void InitProfile()
         {
-            // 当前ServerComboBox中至少有一项
-            if (ServerComboBox.SelectedIndex == -1)
+            // Clear
+            foreach (var button in ProfileButtons)
+                button.Dispose();
+
+            ProfileButtons.Clear();
+            ProfileTable.ColumnStyles.Clear();
+            ProfileTable.RowStyles.Clear();
+
+            var numProfile = Global.Settings.ProfileCount;
+            if (numProfile == 0)
             {
-                MessageBoxX.Show(i18N.Translate("Please select a server first"));
+                // Hide Profile GroupBox, Change window size
+                configLayoutPanel.RowStyles[2].SizeType = SizeType.Percent;
+                configLayoutPanel.RowStyles[2].Height = 0;
+                ProfileGroupBox.Visible = false;
+
+                ConfigurationGroupBox.Size = new Size(ConfigurationGroupBox.Size.Width, _configurationGroupBoxHeight - _profileConfigurationHeight);
+            }
+            else
+            {
+                // Load Profiles
+                ProfileTable.ColumnCount = numProfile;
+
+                while (Global.Settings.Profiles.Count < numProfile)
+                    Global.Settings.Profiles.Add(new Profile());
+
+                for (var i = 0; i < numProfile; ++i)
+                {
+                    var b = new Button();
+                    b.Click += ProfileButton_Click;
+                    b.Dock = DockStyle.Fill;
+                    b.Text = !Global.Settings.Profiles[i].IsDummy ? Global.Settings.Profiles[i].ProfileName : i18N.Translate("None");
+
+                    ProfileTable.Controls.Add(b, i, 0);
+                    ProfileButtons.Add(b);
+                }
+
+                // equal column
+                for (var i = 1; i <= ProfileTable.RowCount; i++)
+                    ProfileTable.RowStyles.Add(new RowStyle(SizeType.Percent, 1));
+
+                for (var i = 1; i <= ProfileTable.ColumnCount; i++)
+                    ProfileTable.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 1));
+
+                configLayoutPanel.RowStyles[2].SizeType = SizeType.AutoSize;
+                ProfileGroupBox.Visible = true;
+                ConfigurationGroupBox.Size = new Size(ConfigurationGroupBox.Size.Width, _configurationGroupBoxHeight);
+            }
+        }
+
+        private void LoadProfile(int index)
+        {
+            var p = Global.Settings.Profiles[index];
+            ProfileNameText.Text = p.ProfileName;
+            ModeComboBox.ResetCompletionList();
+
+            if (p.IsDummy)
+                throw new Exception("Profile not found.");
+
+            var server = ServerComboBox.Items.Cast<Server>().FirstOrDefault(s => s.Remark.Equals(p.ServerRemark));
+            var mode = ModeComboBox.Items.Cast<Models.Mode>().FirstOrDefault(m => m.Remark.Equals(p.ModeRemark));
+
+            if (server == null)
+                throw new Exception("Server not found.");
+
+            if (mode == null)
+                throw new Exception("Mode not found.");
+
+            ServerComboBox.SelectedItem = server;
+            ModeComboBox.SelectedItem = mode;
+        }
+
+        private void SaveProfile(int index)
+        {
+            var selectedServer = (Server) ServerComboBox.SelectedItem;
+            var selectedMode = (Models.Mode) ModeComboBox.SelectedItem;
+            var name = ProfileNameText.Text;
+
+            Global.Settings.Profiles[index] = new Profile(selectedServer, selectedMode, name);
+        }
+
+        private void RemoveProfile(int index)
+        {
+            Global.Settings.Profiles[index] = new Profile();
+        }
+
+        private readonly List<Button> ProfileButtons = new();
+
+        private async void ProfileButton_Click(object sender, EventArgs e)
+        {
+            var index = ProfileButtons.IndexOf((Button) sender);
+
+            if (ModifierKeys == Keys.Control)
+            {
+                if (ServerComboBox.SelectedIndex == -1)
+                {
+                    MessageBoxX.Show(i18N.Translate("Please select a server first"));
+                }
+                else if (ModeComboBox.SelectedIndex == -1)
+                {
+                    MessageBoxX.Show(i18N.Translate("Please select a mode first"));
+                }
+                else if (ProfileNameText.Text == "")
+                {
+                    MessageBoxX.Show(i18N.Translate("Please enter a profile name first"));
+                }
+                else
+                {
+                    SaveProfile(index);
+                    ProfileButtons[index].Text = ProfileNameText.Text;
+                }
+
+                return;
+            }
+
+            if (Global.Settings.Profiles[index].IsDummy)
+            {
+                MessageBoxX.Show(
+                    i18N.Translate("No saved profile here. Save a profile first by Ctrl+Click on the button"));
+                return;
+            }
+
+            if (ModifierKeys == Keys.Shift)
+            {
+                if (MessageBoxX.Show(i18N.Translate("Remove this Profile?"), confirm: true) != DialogResult.OK) return;
+                RemoveProfile(index);
+                ProfileButtons[index].Text = i18N.Translate("None");
                 return;
             }
 
             try
             {
-                //听说巨硬BUG经常会炸，所以Catch一下 :D
-                var server = (Server) ServerComboBox.SelectedItem;
-                string text;
-                if (ModifierKeys == Keys.Control)
-                    text = ShareLink.GetNetchLink(server);
-                else
-                    text = ShareLink.GetShareLink(server);
-
-                Clipboard.SetText(text);
+                LoadProfile(index);
             }
-            catch (Exception)
+            catch (Exception exception)
+            {
+                MessageBoxX.Show(exception.Message, LogLevel.ERROR);
+                return;
+            }
+
+            // start the profile
+            ControlButton_Click(null, null);
+            if (State == State.Stopping || State == State.Stopped)
+            {
+                while (State != State.Stopped)
+                    await Task.Delay(250);
+
+                ControlButton_Click(null, null);
+            }
+        }
+
+        #endregion
+
+        #region State
+
+        private State _state = State.Waiting;
+
+        /// <summary>
+        ///     当前状态
+        /// </summary>
+        public State State
+        {
+            get => _state;
+            private set
+            {
+                void StartDisableItems(bool enabled)
+                {
+                    ServerComboBox.Enabled =
+                        ModeComboBox.Enabled =
+                            EditModePictureBox.Enabled =
+                                EditServerPictureBox.Enabled =
+                                    DeleteModePictureBox.Enabled =
+                                        DeleteServerPictureBox.Enabled = enabled;
+
+                    // 启动需要禁用的控件
+                    UninstallServiceToolStripMenuItem.Enabled =
+                        UpdateACLToolStripMenuItem.Enabled =
+                            updateACLWithProxyToolStripMenuItem.Enabled =
+                                updatePACToolStripMenuItem.Enabled =
+                                    UpdateServersFromSubscribeLinksToolStripMenuItem.Enabled =
+                                        UninstallTapDriverToolStripMenuItem.Enabled =
+                                            ReloadModesToolStripMenuItem.Enabled = enabled;
+                }
+
+                _state = value;
+
+                ServerHelper.Timer.Enabled = IsWaiting(_state);
+
+                StatusText();
+                switch (value)
+                {
+                    case State.Waiting:
+                        ControlButton.Enabled = true;
+                        ControlButton.Text = i18N.Translate("Start");
+
+                        break;
+                    case State.Starting:
+                        ControlButton.Enabled = false;
+                        ControlButton.Text = "...";
+
+                        ProfileGroupBox.Enabled = false;
+                        StartDisableItems(false);
+                        break;
+                    case State.Started:
+                        ControlButton.Enabled = true;
+                        ControlButton.Text = i18N.Translate("Stop");
+
+                        StatusTextAppend(StatusPortInfoText.Value);
+
+                        ProfileGroupBox.Enabled = true;
+
+                        break;
+                    case State.Stopping:
+                        ControlButton.Enabled = false;
+                        ControlButton.Text = "...";
+
+                        ProfileGroupBox.Enabled = false;
+                        BandwidthState(false);
+                        NatTypeStatusText();
+                        break;
+                    case State.Stopped:
+                        ControlButton.Enabled = true;
+                        ControlButton.Text = i18N.Translate("Start");
+
+                        LastUploadBandwidth = 0;
+                        LastDownloadBandwidth = 0;
+                        Bandwidth.Stop();
+
+                        ProfileGroupBox.Enabled = true;
+                        StartDisableItems(true);
+                        break;
+                    case State.Terminating:
+                        Dispose();
+                        Environment.Exit(Environment.ExitCode);
+                        return;
+                }
+            }
+        }
+
+        private bool IsWaiting()
+        {
+            return State == State.Waiting || State == State.Stopped;
+        }
+        private static bool IsWaiting(State state)
+        {
+            return state == State.Waiting || state == State.Stopped;
+        }
+
+        public static class StatusPortInfoText
+        {
+            private static ushort? _socks5Port;
+            private static ushort? _httpPort;
+            private static bool _shareLan;
+
+            public static ushort HttpPort
+            {
+                set => _httpPort = value;
+            }
+
+            public static ushort Socks5Port
+            {
+                set => _socks5Port = value;
+            }
+
+            public static string Value
+            {
+                get
+                {
+                    var strings = new List<string>();
+
+                    if (_socks5Port != null)
+                        strings.Add($"Socks5 {i18N.Translate("Local Port", ": ")}{_socks5Port}");
+
+                    if (_httpPort != null)
+                        strings.Add($"HTTP {i18N.Translate("Local Port", ": ")}{_httpPort}");
+
+                    if (!strings.Any())
+                        return string.Empty;
+
+                    return $" ({(_shareLan ? i18N.Translate("Allow other Devices to connect") + " " : "")}{string.Join(" | ", strings)})";
+                }
+            }
+
+            public static void UpdateShareLan()
+            {
+                _shareLan = Global.Settings.LocalAddress != "127.0.0.1";
+            }
+
+            public static void Reset()
+            {
+                _httpPort = _socks5Port = null;
+            }
+        }
+
+        /// <summary>
+        ///     更新状态栏文本
+        /// </summary>
+        /// <param name="text"></param>
+        public void StatusText(string text = null)
+        {
+            if (InvokeRequired)
+            {
+                BeginInvoke(new Action<string>(StatusText), text);
+                return;
+            }
+
+            text ??= i18N.Translate(StateExtension.GetStatusString(State));
+            StatusLabel.Text = i18N.Translate("Status", ": ") + text;
+        }
+
+        public void StatusTextAppend(string text)
+        {
+            StatusLabel.Text += text;
+        }
+        public void BandwidthState(bool state)
+        {
+            UsedBandwidthLabel.Visible /*= UploadSpeedLabel.Visible*/ = DownloadSpeedLabel.Visible = state;
+        }
+
+        public void NatTypeStatusText(string text = "", string country = "")
+        {
+            if (InvokeRequired)
+            {
+                BeginInvoke(new Action<string, string>(NatTypeStatusText), text, country);
+                return;
+            }
+
+            if (State != State.Started)
+            {
+                NatTypeStatusLabel.Text = "";
+                NatTypeStatusLabel.Visible = NatTypeStatusLightLabel.Visible = false;
+                return;
+            }
+
+            if (!string.IsNullOrEmpty(text))
+            {
+                NatTypeStatusLabel.Text = $"NAT{i18N.Translate(": ")}{text} {(country != string.Empty ? $"[{country}]" : "")}";
+
+                UpdateNatTypeLight(int.TryParse(text, out var natType) ? natType : -1);
+            }
+            else
+            {
+                NatTypeStatusLabel.Text = $@"NAT{i18N.Translate(": ", "Test failed")}";
+            }
+
+            NatTypeStatusLabel.Visible = true;
+        }
+
+        /// <summary>
+        ///     更新 NAT指示灯颜色
+        /// </summary>
+        /// <param name="natType"></param>
+        private void UpdateNatTypeLight(int natType = -1)
+        {
+            if (natType > 0 && natType < 5)
+            {
+                NatTypeStatusLightLabel.Visible = Global.Flags.IsWindows10Upper;
+                Color c;
+                switch (natType)
+                {
+                    case 1:
+                        c = Color.LimeGreen;
+                        break;
+                    case 2:
+                        c = Color.Yellow;
+                        break;
+                    case 3:
+                        c = Color.Red;
+                        break;
+                    case 4:
+                        c = Color.Black;
+                        break;
+                    default:
+                        c = Color.Black;
+                        break;
+                }
+
+                NatTypeStatusLightLabel.ForeColor = c;
+            }
+            else
+            {
+                NatTypeStatusLightLabel.Visible = false;
+            }
+        }
+
+        private void NatTypeStatusLabel_Click(object sender, EventArgs e)
+        {
+            if (_state == State.Started && MainController.NttTested)
+                MainController.NatTest();
+        }
+
+        #endregion
+
+        #endregion
+
+        #region Misc
+
+        #region PowerEvent
+
+        private bool _resumeFlag;
+
+        private void SystemEvents_PowerModeChanged(object sender, PowerModeChangedEventArgs e)
+        {
+            switch (e.Mode)
+            {
+                case PowerModes.Suspend: //操作系统即将挂起
+                    if (!IsWaiting())
+                    {
+                        _resumeFlag = true;
+                        Logging.Info("操作系统即将挂起，自动停止");
+                        ControlButton_Click(null, null);
+                    }
+                    break;
+                case PowerModes.Resume: //操作系统即将从挂起状态继续
+                    if (_resumeFlag)
+                    {
+                        _resumeFlag = false;
+                        Logging.Info("操作系统即将从挂起状态继续，自动重启");
+                        ControlButton_Click(null, null);
+                    }
+                    break;
+            }
+        }
+
+        #endregion
+
+        private void Minimize()
+        {
+            // 使关闭时窗口向右下角缩小的效果
+            WindowState = FormWindowState.Minimized;
+
+            if (_isFirstCloseWindow)
+            {
+                // 显示提示语
+                NotifyTip(i18N.Translate("Netch is now minimized to the notification bar, double click this icon to restore."));
+                _isFirstCloseWindow = false;
+            }
+
+            Hide();
+        }
+
+        private void Exit(bool forceExit = false)
+        {
+            if (!IsWaiting() && !Global.Settings.StopWhenExited && !forceExit)
+            {
+                MessageBoxX.Show(i18N.Translate("Please press Stop button first"));
+
+                NotifyIcon_MouseDoubleClick(null, null);
+                return;
+            }
+
+            Hide();
+            NotifyIcon.Visible = false;
+            if (!IsWaiting())
+                ControlButton_Click(null, null);
+
+            Configuration.Save();
+
+            foreach (var file in new[] {"data\\last.json", "data\\privoxy.conf"})
+                if (File.Exists(file))
+                    File.Delete(file);
+
+            State = State.Terminating;
+        }
+
+        private void OnCalled(object sender, OnlyInstance.Commands e)
+        {
+            switch (e)
+            {
+                case OnlyInstance.Commands.Show:
+                    NotifyIcon_MouseDoubleClick(null, null);
+                    break;
+                case OnlyInstance.Commands.Exit:
+                    Exit(true);
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(e), e, null);
+            }
+        }
+
+        #region FormClosingButton
+
+        private bool _isFirstCloseWindow = true;
+        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            if (e.CloseReason == CloseReason.UserClosing && State != State.Terminating)
+            {
+                // 取消"关闭窗口"事件
+                e.Cancel = true; // 取消关闭窗体 
+
+                // 如果未勾选关闭窗口时退出，隐藏至右下角托盘图标
+                if (!Global.Settings.ExitWhenClosed)
+                    Minimize();
+                // 如果勾选了关闭时退出，自动点击退出按钮
+                else
+                    Exit();
+            }
+        }
+
+        #endregion
+
+        #region Updater
+
+        private void CheckUpdate()
+        {
+            UpdateChecker.NewVersionFound += (_, _) =>
+            {
+                NotifyTip($"{i18N.Translate(@"New version available", ": ")}{UpdateChecker.LatestVersionNumber}");
+                NewVersionLabel.Visible = true;
+            };
+            UpdateChecker.Check(Global.Settings.CheckBetaUpdate);
+        }
+
+        private async void NewVersionLabel_Click(object sender, EventArgs e)
+        {
+            if (!UpdateChecker.LatestRelease.assets.Any())
+            {
+                Utils.Utils.Open(UpdateChecker.LatestVersionUrl);
+                return;
+            }
+
+            if (MessageBoxX.Show(i18N.Translate("Download and install now?"), confirm: true) != DialogResult.OK)
+                return;
+            NotifyTip(i18N.Translate("Start downloading new version"));
+
+            NewVersionLabel.Enabled = false;
+            NewVersionLabel.Text = "...";
+            try
+            {
+                void OnDownloadProgressChanged(object o1, DownloadProgressChangedEventArgs args)
+                {
+                    BeginInvoke(new Action(() => { NewVersionLabel.Text = $"{args.ProgressPercentage}%"; }));
+                }
+
+                await UpdateChecker.UpdateNetch(OnDownloadProgressChanged);
+            }
+            catch (Exception exception)
+            {
+                Logging.Error(exception.Message);
+                NotifyTip(exception.Message);
+            }
+        }
+
+        #endregion
+
+        #region NetTraffic
+
+        /// <summary>
+        ///     上一次下载的流量
+        /// </summary>
+        public ulong LastDownloadBandwidth;
+
+        /// <summary>
+        ///     上一次上传的流量
+        /// </summary>
+        public ulong LastUploadBandwidth;
+
+        public void OnBandwidthUpdated(ulong download)
+        {
+            if (InvokeRequired)
+            {
+                BeginInvoke(new Action<ulong>(OnBandwidthUpdated), download);
+                return;
+            }
+
+            try
+            {
+                UsedBandwidthLabel.Text = $"{i18N.Translate("Used", ": ")}{Bandwidth.Compute(download)}";
+                //UploadSpeedLabel.Text = $"↑: {Utils.Bandwidth.Compute(upload - LastUploadBandwidth)}/s";
+                DownloadSpeedLabel.Text = $"↑↓: {Bandwidth.Compute(download - LastDownloadBandwidth)}/s";
+
+                //LastUploadBandwidth = upload;
+                LastDownloadBandwidth = download;
+                Refresh();
+            }
+            catch
             {
                 // ignored
             }
         }
 
-        private void DeleteServerPictureBox_Click(object sender, EventArgs e)
-        {
-            // 当前 ServerComboBox 中至少有一项
-            if (ServerComboBox.SelectedIndex == -1)
-            {
-                MessageBoxX.Show(i18N.Translate("Please select a server first"));
-                return;
-            }
-
-            var index = ServerComboBox.SelectedIndex;
-            Global.Settings.Server.Remove(ServerComboBox.SelectedItem as Server);
-            InitServer();
-            Configuration.Save();
-            if (ServerComboBox.Items.Count > 0)
-                ServerComboBox.SelectedIndex = index != 0 ? index - 1 : index;
-        }
+        #endregion
 
         #region NotifyIcon
 
@@ -487,6 +1466,63 @@ namespace Netch.Forms
 
         #endregion
 
+        private void ComboBox_DrawItem(object sender, DrawItemEventArgs e)
+        {
+            try
+            {
+                if (!(sender is ComboBox cbx))
+                    return;
+
+                // 绘制背景颜色
+                e.Graphics.FillRectangle(new SolidBrush(Color.White), e.Bounds);
+
+                if (e.Index < 0) return;
+
+                // 绘制 备注/名称 字符串
+                e.Graphics.DrawString(cbx.Items[e.Index].ToString(), cbx.Font, new SolidBrush(Color.Black), e.Bounds);
+
+                switch (cbx.Items[e.Index])
+                {
+                    case Server item:
+                    {
+                        // 计算延迟底色
+                        SolidBrush brush;
+                        if (item.Delay > 200)
+                            brush = new SolidBrush(Color.Red);
+                        else if (item.Delay > 80)
+                            brush = new SolidBrush(Color.Yellow);
+                        else if (item.Delay >= 0)
+                            brush = new SolidBrush(Color.FromArgb(50, 255, 56));
+                        else
+                            brush = new SolidBrush(Color.Gray);
+
+                        // 绘制延迟底色
+                        e.Graphics.FillRectangle(brush, _comboBoxNumberBoxWidth * 9, e.Bounds.Y, _comboBoxNumberBoxWidth, e.Bounds.Height);
+
+                        // 绘制延迟字符串
+                        e.Graphics.DrawString(item.Delay.ToString(), cbx.Font, new SolidBrush(Color.Black),
+                            _comboBoxNumberBoxWidth * 9 + _comboBoxNumberBoxWidth / 30, e.Bounds.Y);
+                        break;
+                    }
+                    case Models.Mode item:
+                    {
+                        // 绘制 模式Box 底色
+                        e.Graphics.FillRectangle(new SolidBrush(Color.Gray), _comboBoxNumberBoxWidth * 9, e.Bounds.Y, _comboBoxNumberBoxWidth,
+                            e.Bounds.Height);
+
+                        // 绘制 模式行数 字符串
+                        e.Graphics.DrawString(item.Rule.Count.ToString(), cbx.Font, new SolidBrush(Color.Black),
+                            _comboBoxNumberBoxWidth * 9 + _comboBoxNumberBoxWidth / 30, e.Bounds.Y);
+                        break;
+                    }
+                }
+            }
+            catch (Exception)
+            {
+                // ignored
+            }
+        }
+
         #endregion
     }
 }
\ No newline at end of file