修复重复启动的问题

RustTools/App.xaml.cs

@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System.Threading;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.UI.Xaml;
 
@@ -11,6 +12,7 @@ using RustTools.Models;
 using RustTools.Services;
 using RustTools.ViewModels;
 using RustTools.Views;
+using System.Threading;
 
 namespace RustTools;
 
@@ -45,6 +47,11 @@ public partial class App : Application
     public App()
     {
         InitializeComponent();
+        System.Diagnostics.Process[] myProcesses = System.Diagnostics.Process.GetProcessesByName("RustTools");//获取指定的进程名   
+        if (myProcesses.Length > 1) //如果可以获取到知道的进程名则说明已经启动
+        {
+            Exit();              //关闭系统
+        }
 
         Host = Microsoft.Extensions.Hosting.Host.
         CreateDefaultBuilder().
@@ -104,4 +111,27 @@ public partial class App : Application
 
         await App.GetService<IActivationService>().ActivateAsync(args);
     }
+
+    private Mutex mutex;
+    private void InitializeMutex()
+    {
+        // Mutex name should be unique for your application.
+        string mutexName = "Global\\MyWinUIAppMutex";
+        bool createdNew;
+
+        // Try to create the Mutex. If it fails, another instance is already running.
+        mutex = new Mutex(true, mutexName, out createdNew);
+        if (!createdNew)
+        {
+            // Another instance is already running.
+            Environment.Exit(0); // Exit the current application.
+        }
+
+        // Clean up the Mutex when the application exits.
+        //Current.Exiting += (sender, args) =>
+        //{
+        //    mutex.Close();
+        //    mutex.Dispose();
+        //};
+    }
 }