用C#实现对本机IP地址的设置

    部分代码来自网络，自己收集整理写出来的这个小程序可以对本地IP地址的设置，源码公开！因为IP设置程序程序需要使用到WMI，因此首先添加对WMI的引用，打开【解决方案资源管理器】，在【引用】项上单击右键，并选择【添加引用】菜单项，有需要的可以拿用,程序界面如图：

这里用到一类MaskedTextBox控件，具体使用大家可以百度一下，这里便不多说。源代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Management;
using System.IO;

namespace IPSet
{
    public partial class FrmIPset : Form
    {
        public FrmIPset()
        {
            InitializeComponent();
            // 获取本地计算机所有网卡信息
            string carName = "";
            ManagementObjectSearcher search = new ManagementObjectSearcher("SELECT * FROM Win32_NetWorkAdapterConfiguration");
            foreach (ManagementObject sear in search.Get())
            {
                if (sear["IPAddress"] != null)
                {
                    carName = sear["Description"].ToString().Trim();
                    comboBox1.Items.Add(carName);
                }
            }
            comboBox1.SelectedIndex = 0;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                if ((bool)mo["IPEnabled"])
                {
                    if (mo["Description"].ToString() == comboBox1.SelectedItem.ToString().Trim())
                    {
                        ManagementBaseObject newIP =mo.GetMethodParameters("EnableStatic");
                        ManagementBaseObject newGateway =mo.GetMethodParameters("SetGateways");
                        ManagementBaseObject newDNS =mo.GetMethodParameters("SetDNSServerSearchOrder");
                        // 将要修改的目标 IP 地址
                     //   string selectNewIP;
                        string IPStr = "";
                        string[] IPPart = maskedTextBox1.Text.Split('.');
                        for (int i = 0; i <= 3;i++ )
                        {
                            //删除尾部首部的空格
                            IPStr+=(IPPart[i].Trim()+".");
                        }
                        IPStr = IPStr.Substring(0,IPStr.Length-1);
                        newIP["IPAddress"] = new string[] { IPStr };

                        //设置子网掩码
                         string subStr = "";
                         string[] subPart = mtxtSubNetwork.Text.Split('.');
                         for (int i = 0; i <= 3; i++)
                         {
                             //删除尾部首部的空格
                             subStr += (subPart[i].Trim() + ".");
                         }
                         subStr = subStr.Substring(0, subStr.Length - 1);
                         newIP["SubnetMask"] = new string[] { subStr };

                         //设置网关地址 
                         string gatStr = "";
                         string[] gatPart = mtxtGateway.Text.Split('.');
                         for (int i = 0; i <= 3; i++)
                         {
                             gatStr += (gatPart[i].Trim() + ".");
                         }
                         gatStr = gatStr.Substring(0, gatStr.Length - 1);
                         newGateway["DefaultIPGateway"] = new string[] { gatStr };
                         // 将要修改的目标 DNS 首选地址
                         string dnsStr1 = "";
                         string[] dnsPart1 = mtxtDNS1.Text.Split('.');
                         for (int i = 0; i <= 3; i++)
                         {
                             dnsStr1 += (dnsPart1[i].Trim() + ".");
                         }
                         dnsStr1 = dnsStr1.Substring(0, dnsStr1.Length - 1);
                         // 将要修改的目标 DNS 备用地址
                         string dnsStr2 = "";
                         string[] dnsPart2 = mtxtDNS2.Text.Split('.');
                         for (int i = 0; i <= 3; i++)
                         {
                             dnsStr2 += (dnsPart2[i].Trim() + ".");
                         }
                         dnsStr2 = dnsStr2.Substring(0, dnsStr2.Length - 1);
                         newDNS["DNSServerSearchOrder"] = new string[] { dnsStr1, dnsStr2 };
                         // 修改网络设置
                         try
                         {
                             ManagementBaseObject setIP = mo.InvokeMethod("EnableStatic", newIP, null);
                             ManagementBaseObject setGateways = mo.InvokeMethod("SetGateways", newGateway, null);
                             ManagementBaseObject setDNS = mo.InvokeMethod("SetDNSServerSearchOrder", newDNS, null);
                             MessageBox.Show("设置成功");
                         }
                         catch (Exception ex)
                         {
                             MessageBox.Show(ex .Message);
                         }
                         break;
                    }
                }
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }
        //使能修改按键
        private void maskedTextBox1_TextChanged(object sender, EventArgs e)
        {
            button1.Enabled = true;
        }
        //自动获取
        private void button3_Click(object sender, EventArgs e)
        {
            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc = mc.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                if ((bool)mo["IPEnabled"])
                {
                    if (mo["Description"].ToString() == comboBox1.SelectedItem.ToString().Trim())
                    {
                        //重置DNS为空   
                        mo.InvokeMethod("SetDNSServerSearchOrder", null);
                        //开启DHCP   
                        mo.InvokeMethod("EnableDHCP", null);
                        MessageBox.Show("自动获取IP成功！");
                        break;
                    }
                }
            }
        }
    }
}