Question

我需要从用户的终端服务器会话中获取底层客户端PC名称。

我知道它存在于HKEY_CURRENT_USER\Volatile Environment\CLIENTNAME但是有另一种（最好是原生的.net）获取它的方法吗？

Answer 1

我没有看到托管API。我可以看到获取此信息的唯一基于API的方法是通过WMI或Windows中的本机终端服务API。

以下是使用WTSQuerySessionInformation API返回客户名称的示例：

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);
    }
}

Answer 2

为了完成这些答案，在Citrix Developer Network网站上托管了一个C＃项目，该项目提供了在RDP服务器上列出会话及其IP地址的代码：

How to get client IP address and client hostname using Terminal Services API

从终端服务器会话获取客户端名称的首选方法

2 个答案: