using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Management;namespace changeIP{  public partial class Form1 : Form  {    public Form1()    {      InitializeComponent();    }    private void button1_Click(object sender, EventArgs e)    {      ManagementBaseObject inPar = null;      ManagementBaseObject outPar = null;      ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");      ManagementObjectCollection moc = mc.GetInstances();      foreach (ManagementObject mo in moc)      {        if (!(bool)mo["IPEnabled"])          continue;        //設(shè)置ip地址和子網(wǎng)掩碼        inPar = mo.GetMethodParameters("EnableStatic");        string ip = "";        ip = numericUpDown1.Value.ToString() + "." + numericUpDown2.Value.ToString() + "." + numericUpDown3.Value.ToString() + "." + numericUpDown4.Value.ToString();        inPar["IPAddress"] = new string[] { ip };// 1.備用 2.IP        string ym = "";        ym = numericUpDown8.Value.ToString() + "." + numericUpDown7.Value.ToString() + "." + numericUpDown6.Value.ToString() + "." + numericUpDown5.Value.ToString();        inPar["SubnetMask"] = new string[] { ym };        outPar = mo.InvokeMethod("EnableStatic", inPar, null);        //設(shè)置網(wǎng)關(guān)地址        inPar = mo.GetMethodParameters("SetGateways");        string wg = "";        wg = numericUpDown12.Value.ToString() + "." + numericUpDown11.Value.ToString() + "." + numericUpDown10.Value.ToString() + "." + numericUpDown9.Value.ToString();        inPar["DefaultIPGateway"] = new string[] { wg }; // 1.網(wǎng)關(guān);2.備用網(wǎng)關(guān)        outPar = mo.InvokeMethod("SetGateways", inPar, null);        //設(shè)置DNS        inPar = mo.GetMethodParameters("SetDNSServerSearchOrder");        string dns1 = numericUpDown16.Value.ToString() + "." + numericUpDown15.Value.ToString() + "." + numericUpDown14.Value.ToString() + "." + numericUpDown13.Value.ToString();        string dns2 = numericUpDown20.Value.ToString() + "." + numericUpDown19.Value.ToString() + "." + numericUpDown18.Value.ToString() + "." + numericUpDown17.Value.ToString();        inPar["DNSServerSearchOrder"] = new string[] { dns1, dns2 }; // 1.DNS 2.備用DNS        outPar = mo.InvokeMethod("SetDNSServerSearchOrder", inPar, null);        break;      }    }    private void button2_Click(object sender, EventArgs e)    {      ManagementClass wmi = new ManagementClass("Win32_NetworkAdapterConfiguration");      ManagementObjectCollection moc = wmi.GetInstances();      foreach (ManagementObject mo in moc)      {        //如果沒有啟用IP設(shè)置的網(wǎng)絡(luò)設(shè)備則跳過        if (!(bool)mo["IPEnabled"])          continue;        //重置DNS為空        mo.InvokeMethod("SetDNSServerSearchOrder", null);        //開啟DHCP        mo.InvokeMethod("EnableDHCP", null);      }    }    private void button3_Click(object sender, EventArgs e)    {      this.Close();      this.Dispose();    }    private void Form1_KeyDown(object sender, KeyEventArgs e)    {      switch (e.KeyCode)      {        case Keys.F2:          button1_Click(sender, e);          break;        case Keys.F3:          button2_Click(sender, e);          break;      }    }  }}