using System;
using System.Net;
using System.Net.Sockets;
namespace 
{
 
    public class IPAddress
    {
        /// <summary>
        /// 
        /// </summary>
        public static void Main()
        {
            try 
            {
                Console.WriteLine("input the hostname");
                string PHostName = Console.ReadLine();//read hostname
                IPHostEntry myAddress = Dns.GetHostEntry(PHostName);//read hostname 's ip
                Console.WriteLine("{0}", PHostName);                //beacuse ip has a lot of name .ip judge arrary
                IPAddress[] myIPAddress =(IPAddress[]) myAddress.AddressList;//??????????????????????有错误??
                foreach (IPAddress add in myIPAddress)
                    Console.WriteLine(add);//take out ip from myipaddress
                Console.WriteLine("IP");
                string PAddress = Console.ReadLine();
                IPHostEntry myHostName = Dns.GetHostEntry(PAddress);
                Console.WriteLine("{0}", PAddress);
                Console.WriteLine(myHostName.HostName.ToString());
            }
            catch (SocketException e)
            {
                Console.WriteLine( e.Message);
            }
            Console.WriteLine();
            Console.ReadLine();
        }
    }
}错误 2 无法将类型“System.Net.IPAddress[]”转换为“ClassLibrary1.IPAddress[]” D:\ClassLibrary1\ClassLibrary1\Class4.cs 24 42 ClassLibrary1
   IPAddress[] myIPAddress =(IPAddress[]) myAddress.AddressList;//??????????????????????有错误??
 另个一个错误与上面没有关系的:  TcpListener myTcpListener = new TcpListener(36000);//???????????error   error error
           myTcpListener.Start();
           Console.WriteLine("port 36000 is connection for a wiat now");
           Socket mySocket=myTcpListener.AcceptSocket();
警告 3 “System.Net.Sockets.TcpListener.TcpListener(int)”已过时:
“This method has been deprecated. Please use TcpListener(IPAddress localaddr, int port) 
instead. http://go.microsoft.com/fwlink/?linkid=14202”
D:\ClassLibrary1\ClassLibrary1\networkserver.cs 19 40 ClassLibrary1
 TcpListener myTcpListener = new TcpListener(36000);//???????????error   error error