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
  
 
  

    
  
 
  

   ContractedBlock.gif
   ExpandedBlockStart.gif
   设置服务与桌面交互 
   

    

    

      
     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