在Windows服務的安裝類ProjectInstaller中加入以下方法：

代碼如下:
protected override void OnCommitted(System.Collections.IDictionary savedState)
{
base.OnCommitted(savedState);
//將服務更改為允許桌面交互模式
ConnectionOptions coOptions = new ConnectionOptions();
coOptions.Impersonation = ImpersonationLevel.Impersonate;
ManagementScope mgmtScope = new System.Management.ManagementScope(@"root/CIMV2", coOptions);
mgmtScope.Connect();
ManagementObject wmiService;
wmiService = new ManagementObject("Win32_Service.Name='這里是當前服務名'");
ManagementBaseObject InParam = wmiService.GetMethodParameters("Change");
InParam["DesktopInteract"] = true;
ManagementBaseObject OutParam = wmiService.InvokeMethod("Change", InParam, null);
}