在win form程序中獲取本機的IP地址

在win form程序中獲取本機的IP地址

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.Win32;

namespace testLocalIP
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            string hostname;
            System.Net.IPHostEntry localhost;
            System.Net.IPAddress localaddr;

            hostname = System.Net.Dns.GetHostName();
            localhost = System.Net.Dns.GetHostByName(hostname);
            localaddr = localhost.AddressList[0];   //localaddr中就是本機ip地址

            this.textBox1.Text = localhost.AddressList[0].ToString();
            this.textBox2.Text = System.Net.Dns.GetHostName().ToString();
            this.textBox3.Text = System.Net.Dns.GetHostByName(hostname).ToString();

        }
    }
}