Window Service程序中如何获取登陆用户的信息

    在windows底层的api中，提供了以下的方法来满足需求：

    WTSGetActiveConsoleSessionId: 获取当前active User的 session ID。

    CreateProcessAsUser：用当前用户创建一个新的进程。

1. public static string GetCurrentActiveUser()
   
2.         {
   
3.             IntPtr hServer = IntPtr.Zero, state = IntPtr.Zero;
   
4.             uint bCount = 0;
   
5. 
   
6.             // obtain the currently active session id; every logged on user in the system has a unique session id
   
7.             uint dwSessionId = WTSGetActiveConsoleSessionId();
   
8.             string domain = string.Empty, userName = string.Empty;
   
9. 
   
10.             if (WTSQuerySessionInformation(hServer, (int)dwSessionId, WTSInfoClass.DomainName, out state, out bCount))
    
11.             {
    
12.                 domain = Marshal.PtrToStringAuto(state);
    
13.             }
    
14. 
    
15.             if (WTSQuerySessionInformation(hServer, (int)dwSessionId, WTSInfoClass.UserName, out state, out bCount))
    
16.             {
    
17.                 userName = Marshal.PtrToStringAuto(state);
    
18.             }
    
19. 
    
20.             return string.Format("{0}\\{1}", domain, userName);
    
21.         }