C#之DNS类

 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Linq;
 7 using System.Text;
 8 using System.Threading.Tasks;
 9 using System.Windows.Forms;
10 using System.Net;
11 
12 namespace WindowsFormsApplication1
13 {
14     public partial class Form1 : Form
15     {
16         public Form1()
17         {
18             InitializeComponent();
19         }
20 
21         private void button1_Click(object sender, EventArgs e)
22         {
23             textBox2.Text = string.Empty;
24             IPAddress[] ips = Dns.GetHostAddresses(textBox1.Text);
25             foreach (IPAddress ip in ips)
26             {
27                 textBox2.Text = ip.ToString();
28             }
29             textBox3.Text = Dns.GetHostName();
30             textBox4.Text = Dns.GetHostByName(Dns.GetHostName()).HostName;
31         }
32     }
33 }