GetDomainUserName

GetDomainUserName.cs

using System;
using System.IO;

/// <summary>
///   GetDomainUserName
/// </summary>
public class GetDomainUserName
{
    /// <summary>
    ///   The main entry point for the application
    /// </summary>
    [STAThread]
    public static void Main( string[] args )
    {
        Console.WriteLine( GetUserName("") );
        Console.WriteLine( GetUserName("MyDomain\\weijie") );
        Console.WriteLine( GetUserName("weijie") );
    }

    public static string GetUserName(string raw){

        if( string.IsNullOrEmpty(raw) )
            return string.Empty;

        string[] tokens = raw.Split('\\');

        if( tokens.Length == 1 )
            return tokens[0];

        return tokens[1];
    }
    
}