更新...

CTZLauncher/MainWindow.xaml.cs

@@ -250,6 +250,15 @@ namespace CTZLauncher
 
         private void StartGame_Click(object sender, RoutedEventArgs e)
         {
+            if (option.Version == null)
+            {
+                MessageBoxResult result = MessageBox.Show("是否下载服务器所需要的客户端版本?", "缺少客户端", MessageBoxButton.OKCancel, MessageBoxImage.Question);
+                if (result == MessageBoxResult.Yes)
+                {
+
+                }
+                return;
+            }
             Console.WriteLine("启动游戏");
             option.Mode = LaunchMode.MCLauncher;
             option.MaxMemory = 2048;

CTZLauncher/Properties/app.manifest

@@ -16,7 +16,7 @@
             如果要利用文件和注册表虚拟化实现向后 
             兼容性，则删除 requestedExecutionLevel 节点。
         -->
-        <requestedExecutionLevel level="asInvoker" uiAccess="false" />
+        <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
       </requestedPrivileges>
       <applicationRequestMinimum>
         <PermissionSet class="System.Security.PermissionSet" version="1" Unrestricted="true" ID="Custom" SameSite="site" />