c# 允许服务与桌面交互

我们写一个服务，有时候要让服务启动某个应用程序，就要修改服务的属性，勾选允许服务与桌面交互，

可以用修改注册表实现，我们必须在安装后操作，所以请重写Installer的OnAfterInstall。

        protected override void OnAfterInstall(System.Collections.IDictionary savedState) {
            RegistryKey rk = Registry.LocalMachine;
            string key = @"SYSTEM/CurrentControlSet/Services/" + this.sInstaller.ServiceName;
            RegistryKey sub = rk.OpenSubKey(key, true);
            int value = (int)sub.GetValue("Type");
            if (value < 256) {
                sub.SetValue("Type", value | 256);
            }
            base.OnAfterInstall(savedState);
        }

 

但以上方法只能在重启后起到作用。。。若要想立即生效可以用以下代码代之，将此方法放入onAfterInstall即可

 

        private void SetServiceDesktopInsteract(string serviceName) {
            ManagementObject wmiService = new ManagementObject(string.Format("Win32_Service.Name='{0}'",serviceName));
            ManagementBaseObject changeMethod = wmiService.GetMethodParameters("Change");
            changeMethod["DesktopInteract"] = true;
            ManagementBaseObject OutParam = wmiService.InvokeMethod("Change", changeMethod, null);
        }

 

 

若想立即启动服务调System.ServiceProcess.ServiceController类来实现