C# 查詢對方IP

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;

namespace ConsoleApplication8
...{
    class Program
    ...{
        static void Main(string[] args)
        ...{
            if (args.Length != 1)
            ...{
                Console.WriteLine("Usage:Dns");
                Console.ReadLine();
                return;
            }
            IPHostEntry iphost = Dns.GetHostEntry(args[0]);
            Console.WriteLine("Host:{0}",&nbs
p;iphost.HostName);

            if (iphost.Aliases.Length > 0)
            ...{
                Console.WriteLine(" Aliases");
                foreach (string alias in iphost.Aliases)
                ...{
                    Console.WriteLine(alias);
                }
                
            }

            Console.WriteLine(" Address(es):");
            foreach (IPAddress address in iphost.AddressList)
            ...{
                Console.WriteLine("Address:{0}", address.ToString());
            }

        }
    }
} 最後在程序的屬性中設計debug的命令參數 如：www.baidu.com  就可以查找對方的IP