通用类名[ComputerLoginUserInfo.cs] 代码如下：
代码 using System; // ---引用 using System.Runtime.InteropServices; using System.Text; /// <summary> /// Windows 任务管理器登录用户信息 /// author:Stone_W /// date:2011.1.14 /// </summary> public class ComputerLoginUserInfo{ #region 本机连接用户信息API封装 public class TSControl { [DllImport( " wtsapi32 " , CharSet = CharSet.Auto, SetLastError = true )] private static extern bool WTSEnumerateSessions( int hServer, int Reserved, int Version, ref long ppSessionInfo, ref int pCount); [DllImport( " wtsapi32.dll " )] public static extern void WTSFreeMemory(System.IntPtr pMemory); [DllImport( " wtsapi32.dll " )] public static extern bool WTSLogoffSession( int hServer, long SessionId, bool bWait); [DllImport( " Wtsapi32.dll " )] public static extern bool WTSQuerySessionInformation( System.IntPtr hServer, int sessionId, WTSInfoClass wtsInfoClass, out StringBuilder ppBuffer, out int pBytesReturned); public enum WTSInfoClass { WTSInitialProgram, WTSApplicationName, WTSWorkingDirectory, WTSOEMId, WTSSessionId, WTSUserName, WTSWinStationName, WTSDomainName, WTSConnectState, WTSClientBuildNumber, WTSClientName, WTSClientDirectory, WTSClientProductId, WTSClientHardwareId, WTSClientAddress, WTSClientDisplay, WTSClientProtocolType } public enum WTS_CONNECTSTATE_CLASS { WTSActive, WTSConnected, WTSConnectQuery, WTSShadow, WTSDisconnected, WTSIdle, WTSListen, WTSReset, WTSDown, WTSInit, } public struct WTS_SESSION_INFO { public int SessionID; [MarshalAs(UnmanagedType.LPTStr)] public string pWinStationName; public WTS_CONNECTSTATE_CLASS state; } public static WTS_SESSION_INFO[] SessionEnumeration() { // Set handle of terminal server as the current terminal server int hServer = 0 ; bool RetVal; long lpBuffer = 0 ; int Count = 0 ; long p; WTS_SESSION_INFO Session_Info = new WTS_SESSION_INFO(); WTS_SESSION_INFO[] arrSessionInfo; RetVal = WTSEnumerateSessions(hServer, 0 , 1 , ref lpBuffer, ref Count); arrSessionInfo = new WTS_SESSION_INFO[ 0 ]; if (RetVal) { arrSessionInfo = new WTS_SESSION_INFO[Count]; int i; p = lpBuffer; for (i = 0 ; i < Count; i ++ ) { arrSessionInfo[i] = (WTS_SESSION_INFO)Marshal.PtrToStructure( new IntPtr(p), Session_Info.GetType()); p += Marshal.SizeOf(Session_Info.GetType()); } WTSFreeMemory( new IntPtr(lpBuffer)); } else { // Insert Error Reaction Here } return arrSessionInfo; } } #endregion public System.Collections.Generic.List < ComputerLoginUserInfoModel > ComputerLoginUserInfoList; public ComputerLoginUserInfo() { #region 查询代码 TSControl.WTS_SESSION_INFO[] pSessionInfo = TSControl.SessionEnumeration(); ComputerLoginUserInfoModel cum = null ; ComputerLoginUserInfoList = new System.Collections.Generic.List < ComputerLoginUserInfoModel > (); for ( int i = 0 ; i < pSessionInfo.Length; i ++ ) { if ( " RDP-Tcp " != pSessionInfo[i].pWinStationName) { try { int count = 0 ; IntPtr buffer = IntPtr.Zero; StringBuilder userName = new StringBuilder(); // 用户名 StringBuilder clientUser = new StringBuilder(); // 客户端名 StringBuilder stateType = new StringBuilder(); // 会话类型 bool userNameBool = TSControl.WTSQuerySessionInformation(IntPtr.Zero, pSessionInfo[i].SessionID, TSControl.WTSInfoClass.WTSUserName, out userName, out count); bool clientUserBool = TSControl.WTSQuerySessionInformation(IntPtr.Zero, pSessionInfo[i].SessionID, TSControl.WTSInfoClass.WTSClientName, out clientUser, out count); bool stateTypeBool = TSControl.WTSQuerySessionInformation(IntPtr.Zero, pSessionInfo[i].SessionID, TSControl.WTSInfoClass.WTSWinStationName, out stateType, out count); if (userNameBool && clientUserBool && stateTypeBool) { cum = new ComputerLoginUserInfoModel(); cum.UserName = userName.ToString(); cum.ClientUserName = clientUser.ToString(); cum.SessionType = stateType.ToString(); } ComputerLoginUserInfoList.Add(cum); } catch (Exception ex) { } } } #endregion }} public class ComputerLoginUserInfoModel{ #region 用户信息字段 private string userName; private string clientUserName; private string sessionType; /// <summary> /// 会话类型 /// </summary> public string SessionType { get { return sessionType; } set { sessionType = value; } } /// <summary> /// 客户端名 /// </summary> public string ClientUserName { get { return clientUserName; } set { clientUserName = value; } } /// <summary> /// 登录用户名 /// </summary> public string UserName { get { return userName; } set { userName = value; } } #endregion }使用：ComputerLoginUserInfo uif = new ComputerLoginUserInfo(); foreach (ComputerLoginUserInfoModel item in uif.ComputerLoginUserInfoList) { Response.Write(item.UserName); }
ps：尊重劳动人民成果，技术是共享的，但如果引用代码请注明出处谢谢.
[引用地址：http://www.cnblogs.com/stone_w/archive/2011/01/14/1935219.html]
