first commit

Program.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Windows;
+
+namespace VHDMounter
+{
+    class Program
+    {
+        [STAThread]
+        static void Main(string[] args)
+        {
+            // 检查是否已有实例运行
+            using (var mutex = new System.Threading.Mutex(true, "VHDMounterApp", out bool createdNew))
+            {
+                if (!createdNew)
+                {
+                    return; // 已有实例运行，退出
+                }
+
+                var app = new Application();
+                var mainWindow = new MainWindow();
+                app.Run(mainWindow);
+            }
+        }
+    }
+}