如何从外部服务器获取windows用户名？

using System;
using System.Management;

public class Program
{
    public static void Main()
    {
        try
        {
            ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT UserName FROM Win32_ComputerSystem");
            ManagementObjectCollection collection = searcher.Get();

            foreach (ManagementObject obj in collection)
            {
                Console.WriteLine("Windows用户名: " + obj["UserName"]);
            }
        }
        catch (ManagementException e)
        {
            Console.WriteLine("获取Windows用户名失败: " + e.Message);
        }
    }
}

$env:USERNAME