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C#

Form1.cs：源码内容

							﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
namespace UseDNS
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            lbHost.Text = Dns.GetHostName();
            IPHostEntry Host = Dns.GetHostEntry(lbHost.Text);
            //IPHostEntry Host = Dns.GetHostByName(lbHost.Text);
            lbHost.Text = "本机域名为:" + lbHost.Text + ",IP地址为：" + Host.AddressList[0].ToString();
        }
        private void getDomain_Click(object sender, EventArgs e)
        {
            try
            {
                if (tbIP.Text != "")
                {
                    IPHostEntry Host = Dns.GetHostEntry(lbHost.Text); //Dns.GetHostByAddress(tbIP.Text);
                    tbDomain.Text = Host.HostName;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message.ToString());
            }
        }
        private void btnGetIP_Click(object sender, EventArgs e)
        {
            try
            {
                if (tbDomain.Text != "")
                {
                    IPHostEntry Host = Dns.GetHostEntry(tbDomain.Text);
                    tbIP.Text = Host.AddressList[0].ToString();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message.ToString());
            }
        }
    }
}

						