C#从windows剪贴板获取并显示文本内容

using System;
using System.Windows.Forms;
 
namespace RobvanderWoude
{
    class Paste
    {
        [STAThread]
        static int Main( string[] args )
        {
            if ( args.Length == 0 )
            {
                try
                {
                    if ( Clipboard.ContainsText( ) )
                    {
                        string clipText = Clipboard.GetText( );
                        Console.Write( clipText );
                        return 0;
                    }
                    else
                    {
                        return 1;
                    }
                }
                catch ( Exception e )
                {
                    Console.Error.WriteLine( e.Message );
                    return 2;
                }
            }
            else
            {
                Console.Error.WriteLine( );
                Console.Error.WriteLine( "Paste.exe,Version 1.01" );
                Console.Error.WriteLine( "Read and display text from the clipboard" );
                Console.Error.WriteLine( );
                Console.Error.WriteLine( "Usage:  PASTE" );
                Console.Error.WriteLine( );
                Console.Error.WriteLine( "Note:   The program returns the following 'errorlevels':" );
                Console.Error.WriteLine( "            0    success" );
                Console.Error.WriteLine( "            1    no text available in clipboard" );
                Console.Error.WriteLine( "            2    command line or unknown error" );
                Console.Error.WriteLine( );
                Console.Error.WriteLine( "Written by Rob van der Woude" );
                Console.Error.WriteLine( "http://www.robvanderwoude.com" );
                return 2;
            }
        }
    }
}