preferred方式获得客户的名字从终端服务器会话

问题描述

我需要从用户的终端服务器会话获取潜在的客户端PC名称。

I need to get the underlying client PC name from a user's terminal server session.

我知道它生活在 HKEY_CURRENT_USER \ Volatile环境\ CLIENTNAME ，但有另一种（preferably本机.NET）得到它的方法是什么？

I know it lives in HKEY_CURRENT_USER\Volatile Environment\CLIENTNAME but is there another (preferably native .net) method of getting it?

推荐答案

我没有看到这样的托管API。唯一的基于API的方式，我可以看到，在得到这些信息将通过WMI或Windows中的本地终端服务API。

I didn't see a managed API for this. The only API-based ways I could see for getting at this information would be through WMI or the native Terminal Services API in Windows.

下面是返回使用 WTSQuerySessionInformation API客户端名称的例子：

Here is an example that returns the client name using the WTSQuerySessionInformation API:

namespace com.stackoverflow
{
    using System;
    using System.Runtime.InteropServices;

    public class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(GetTerminalServicesClientName());
        }

        /// <summary>
        /// Gets the name of the client system.
        /// </summary>
        internal static string GetTerminalServicesClientName()
        {
            IntPtr buffer = IntPtr.Zero;

            string clientName = null;
            int bytesReturned;

            bool success = NativeMethods.WTSQuerySessionInformation(
                NativeMethods.WTS_CURRENT_SERVER_HANDLE,
                NativeMethods.WTS_CURRENT_SESSION,
                NativeMethods.WTS_INFO_CLASS.WTSClientName,
                out buffer,
                out bytesReturned);

            if (success)
            {
                clientName = Marshal.PtrToStringUni(
                    buffer,
                    bytesReturned / 2 /* Because the DllImport uses CharSet.Unicode */
                    );
                NativeMethods.WTSFreeMemory(buffer);
            }

            return clientName;
        }
    }

    public static class NativeMethods
    {
        public static readonly IntPtr WTS_CURRENT_SERVER_HANDLE = IntPtr.Zero;
        public const int WTS_CURRENT_SESSION = -1;

        public enum WTS_INFO_CLASS
        {
            WTSClientName = 10
        }

        [DllImport("Wtsapi32.dll", CharSet = CharSet.Unicode)]
        public static extern bool WTSQuerySessionInformation(
            IntPtr hServer,
            Int32 sessionId,
            WTS_INFO_CLASS wtsInfoClass,
            out IntPtr ppBuffer,
            out Int32 pBytesReturned);

        /// <summary>
        /// The WTSFreeMemory function frees memory allocated by a Terminal
        /// Services function.
        /// </summary>
        /// <param name="memory">Pointer to the memory to free.</param>
        [DllImport("wtsapi32.dll", ExactSpelling = true, SetLastError = false)]
        public static extern void WTSFreeMemory(IntPtr memory);
    }
}

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