A:增加WebView2检测功能

src/NetVizor.Backend/Shell/App.xaml.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics;
 using System.IO;
 using System.Net;
 using System.Net.Http;
@@ -20,6 +21,7 @@ using Shell.Views;
 using Utils.ETW.Etw;
 using Utils.Firewall;
 using Dapper;
+using Shell.Utils;
 using MessageBox = System.Windows.Forms.MessageBox;
 
 namespace Shell;
@@ -83,6 +85,23 @@ public partial class App : System.Windows.Application
 
         // 设置应用程序在关闭最后一个窗口时不自动退出
         this.ShutdownMode = ShutdownMode.OnExplicitShutdown;
+
+        // 检测 WebView2
+        bool hasRuntime = await WebView2Helper.IsWebView2RuntimeInstalled();
+        if (!hasRuntime)
+        {
+            // 非阻塞提示
+            MessageBox.Show(
+                "检测到您未安装 WebView2 运行时，统计页面等功能将不可用。\n\n点击“确定”访问下载页面。"
+            );
+
+            // 跳转官方下载
+            Process.Start(new ProcessStartInfo
+            {
+                FileName = "https://go.microsoft.com/fwlink/p/?LinkId=2124703",
+                UseShellExecute = true
+            });
+        }
     }
 
     private async void Mouth()

src/NetVizor.Backend/Shell/Utils/WebView2Helper.cs

@@ -0,0 +1,29 @@
+using System.IO;
+using Microsoft.Web.WebView2.Core;
+
+namespace Shell.Utils;
+
+public class WebView2Helper
+{
+    public static async Task<bool> IsWebView2RuntimeInstalled()
+    {
+        try
+        {
+            // 试着创建一个环境，不会真正显示控件
+            await CoreWebView2Environment.CreateAsync();
+            return true;
+        }
+        catch (FileNotFoundException)
+        {
+            return false; // 缺 DLL 或运行时
+        }
+        catch (WebView2RuntimeNotFoundException)
+        {
+            return false; // 没有安装运行时
+        }
+        catch (Exception)
+        {
+            return false;
+        }
+    }
+}

src/NetVizor.Backend/Shell/Views/NetView.xaml.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel;
+using System.Diagnostics;
 using System.Runtime.InteropServices;
 using System.Windows;
 using System.Windows.Controls;
@@ -40,6 +41,8 @@ public partial class NetView : Window
     public NetView()
     {
         InitializeComponent();
+        WebView2Init();
+
         Loaded += OnLoaded;
         InitializeTrayIcon();
         this.Loaded += NetView_Loaded;
@@ -54,6 +57,24 @@ public partial class NetView : Window
         _appSettings = new AppSetting();
     }
 
+    private async Task WebView2Init()
+    {
+        bool hasRuntime = await WebView2Helper.IsWebView2RuntimeInstalled();
+
+        if (!hasRuntime)
+        {
+            if (System.Windows.MessageBox.Show(
+                    "您未安装 WebView2 运行时，无法打开该页面。\n是否立即下载？") == MessageBoxResult.Yes)
+            {
+                Process.Start(new ProcessStartInfo
+                {
+                    FileName = "https://go.microsoft.com/fwlink/p/?LinkId=2124703",
+                    UseShellExecute = true
+                });
+            }
+        }
+    }
+
     private async void OnLoaded(object sender, RoutedEventArgs e)
     {
         // 从数据库加载设置
@@ -131,12 +152,12 @@ public partial class NetView : Window
         try
         {
             var netViewSettings = Shell.Models.NetViewSettings.Instance;
-            
+
             // 同步外观设置
             netViewSettings.TextColor = _appSettings.TextColor;
             netViewSettings.BackgroundColor = _appSettings.BackgroundColor;
             netViewSettings.BackgroundOpacity = _appSettings.Opacity;
-            
+
             // 同步显示设置
             netViewSettings.SpeedUnit = _appSettings.SpeedUnit switch
             {
@@ -146,16 +167,16 @@ public partial class NetView : Window
                 3 => Shell.Models.SpeedUnit.Auto,
                 _ => Shell.Models.SpeedUnit.Auto
             };
-            
+
             netViewSettings.ShowUnit = _appSettings.ShowUnit;
-            netViewSettings.LayoutDirection = _appSettings.LayoutDirection == 0 
-                ? Shell.Models.LayoutDirection.Horizontal 
+            netViewSettings.LayoutDirection = _appSettings.LayoutDirection == 0
+                ? Shell.Models.LayoutDirection.Horizontal
                 : Shell.Models.LayoutDirection.Vertical;
-            
+
             // 同步网速Top榜设置
             netViewSettings.ShowNetworkTopList = _appSettings.ShowNetworkTopList;
             netViewSettings.NetworkTopListCount = _appSettings.NetworkTopListCount;
-            
+
             // 同步交互设置
             netViewSettings.DoubleClickAction = _appSettings.DoubleClickAction switch
             {
@@ -164,14 +185,14 @@ public partial class NetView : Window
                 2 => Shell.Models.DoubleClickAction.Settings,
                 _ => Shell.Models.DoubleClickAction.None
             };
-            
+
             // 同步窗口行为设置
             netViewSettings.LockPosition = _appSettings.IsPositionLocked;
             netViewSettings.ClickThrough = _appSettings.IsClickThrough;
             netViewSettings.Topmost = _appSettings.IsTopmost;
             netViewSettings.SnapToScreen = _appSettings.SnapToScreen;
             netViewSettings.ShowDetailedInfo = _appSettings.ShowDetailedInfo;
-            
+
             System.Diagnostics.Debug.WriteLine("已将数据库设置同步到NetViewSettings实例");
         }
         catch (Exception ex)