从获得的SessionID Windows用户名

问题描述

有没有在C＃中的方法从给定的会话ID检索用户名？结果
（在系统上运行任何会话）

Is there a method in C# to retrieve the user name from a given session id?
(any session running on the system)

该赢API函数<$c$c>WTSQuerySessionInformation做到这一点，但我在寻找这个funcationality在C＃。

The Win API function WTSQuerySessionInformation does this, but I'm searching for this funcationality in C#.

推荐答案

有似乎对此没有.NET的集成方法。结果
因此，这是当前的解决方案，使用Windows终端服务API：

There seems to be no .NET integrated method for this.
So this is the current solution, using Windows Terminal services API:

    [DllImport("Wtsapi32.dll")]
    private static extern bool WTSQuerySessionInformation(IntPtr hServer, int sessionId, WtsInfoClass wtsInfoClass, out System.IntPtr ppBuffer, out int pBytesReturned);
    [DllImport("Wtsapi32.dll")]
    private static extern void WTSFreeMemory(IntPtr pointer);

    public enum WtsInfoClass
    {
        WTSInitialProgram,
        WTSApplicationName,
        WTSWorkingDirectory,
        WTSOEMId,
        WTSSessionId,
        WTSUserName,
        WTSWinStationName,
        WTSDomainName,
        WTSConnectState,
        WTSClientBuildNumber,
        WTSClientName,
        WTSClientDirectory,
        WTSClientProductId,
        WTSClientHardwareId,
        WTSClientAddress,
        WTSClientDisplay,
        WTSClientProtocolType,
        WTSIdleTime,
        WTSLogonTime,
        WTSIncomingBytes,
        WTSOutgoingBytes,
        WTSIncomingFrames,
        WTSOutgoingFrames,
        WTSClientInfo,
        WTSSessionInfo,
    }

    public static string GetUsernameBySessionId(int sessionId, bool prependDomain) {
        IntPtr buffer;
        int strLen;
        string username = "SYSTEM";
        if (WTSQuerySessionInformation(IntPtr.Zero, sessionId, WtsInfoClass.WTSUserName, out buffer, out strLen) && strLen > 1) {
            username = Marshal.PtrToStringAnsi(buffer);
            WTSFreeMemory(buffer);
            if (prependDomain) {
                if (WTSQuerySessionInformation(IntPtr.Zero, sessionId, WtsInfoClass.WTSDomainName, out buffer, out strLen) && strLen > 1) {
                    username = Marshal.PtrToStringAnsi(buffer) + "\\" + username;
                    WTSFreeMemory(buffer);
                }
            }
        }
        return username;
    }

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