网络主机名与IP

一、通过网址获取IP

上一个GroupBox 的ID为:groupBox1;下一个为:groupBox2

TextBox的ID为: domainName;ListBox 的ID为:ip


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 WindowsApplication12
{
    
public partial class Form1 : Form
    {
        
public Form1()
        {
            InitializeComponent();
        }

        
private void button1_Click(object sender, EventArgs e)
        {

            ip.Items.Clear();
            
try
            {
                
string ipAddress = domainName.Text.ToString();
                IPAddress[] hostinfo 
= Dns.GetHostAddresses(ipAddress);
                
for (int i = 0; i < hostinfo.Length; i++)
                {
                    ip.Items.Add(hostinfo[i]);
                }
            }
            
catch (Exception exc)
            {
                MessageBox.Show(exc.Message, 
"提示");
            }

        }

        
private void button2_Click(object sender, EventArgs e)
        {
            
this.Close();
        }

    }
}

二、通过IP获取域名

上一个GroupBox 的ID为:groupBox1;下一个为:groupBox2

TextBox的ID为: ip;ListBox 的ID为:domainName

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 WindowsApplication12
{
    
public partial class Form1 : Form
    {
        
public Form1()
        {
            InitializeComponent();
        }

        
private void button1_Click(object sender, EventArgs e)
        {

            domainName.Items.Clear();
            
try
            {
                IPAddress ipAddress 
= IPAddress.Parse(ip.Text);
                IPHostEntry hostinfo 
= Dns.GetHostEntry(ipAddress);
                
string[] alias = hostinfo.Aliases;
                domainName.Items.Add(hostinfo.HostName);
                
for (int i = 0; i < alias.Length; i++)
                {
                    domainName.Items.Add(alias[i]);
                }
            }
            
catch (Exception exc)
            {
                MessageBox.Show(exc.Message, 
"提示");
            }

        }

        
private void button2_Click(object sender, EventArgs e)
        {
            
this.Close();
        }

    }
}




你可能感兴趣的:(IP)