修改IP和修改自动获取IP的实例

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Management;
using System.Net;
using System.Text.RegularExpressions;
using System.Net.NetworkInformation;

namespace 修改IP2
{
    public partial class form1 : Form
    {
        public form1()
        {
            InitializeComponent();
            GetIP();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            SetNetworkAdapter("defalut");
        }

        private void button2_Click(object sender, EventArgs e)
        {
            SetNetworkAdapter("empty");
            EnableDHCP();
        }

        private void SetNetworkAdapter(string str)
        {

            string oldgateway = GetGateway();
            string oldip = GetLocalIP();
            string[] ipgroup;
            string[] SubnetMask;
            string gateway;
            string[] DNSServerSearchOrder=new string[] { "180.76.76.76","114.114.114.114"};

            switch (str)
            {
                case "defalut":
                    ipgroup = new string[]{ oldip, "192.168.1.200" };
                    SubnetMask = new string[] { "255.255.255.0", "255.255.255.0" };
                    gateway =oldgateway;
                    break;
                default:
                    ipgroup = new string[] { };
                    SubnetMask = new string[] { };
                    gateway = "";
                    break;
            }
                

            
            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;


                //设置ip地址和子网掩码 
                inPar = mo.GetMethodParameters("EnableStatic");
                inPar["IPAddress"] =  ipgroup; // 1.备用 2.IP
                inPar["SubnetMask"] = SubnetMask;
                outPar = mo.InvokeMethod("EnableStatic", inPar, null);

                //设置网关地址 
                inPar = mo.GetMethodParameters("SetGateways");
                inPar["DefaultIPGateway"] = new string[] { gateway }; // 1.网关;2.备用网关 
                outPar = mo.InvokeMethod("SetGateways", inPar, null);

                //设置DNS 
                inPar = mo.GetMethodParameters("SetDNSServerSearchOrder");
                inPar["DNSServerSearchOrder"] = DNSServerSearchOrder; // 1.DNS 2.备用DNS 
                outPar = mo.InvokeMethod("SetDNSServerSearchOrder", inPar, null);
                break;
            }
        }

        private void GetIP()
        {
            bool havechangeip = false;
            Regex ipex = new Regex(@"192.168.1.\d ");
            string hostName = Dns.GetHostName();//本机名   
                                                //System.Net.IPAddress[] addressList = Dns.GetHostByName(hostName).AddressList;//会警告GetHostByName()已过期，我运行时且只返回了一个IPv4的地址   
            System.Net.IPAddress[] addressList = Dns.GetHostAddresses(hostName);//会返回所有地址，包括IPv4和IPv6   
            foreach (IPAddress ip in addressList)
            {
                //listBox1.Items.Add(ip.ToString());
                if (ipex.IsMatch(ip.ToString()))
                {
                    havechangeip = true;
                }
            }

            if (havechangeip == false)
            {
                if (MessageBox.Show("在您的计算机中未检测到192.168.1.X段IP，是否修改？", "确认修改", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
                {
                    SetNetworkAdapter("defalut");
                }
            }
        }

        public static void EnableDHCP()
        {
            ManagementClass wmi = new ManagementClass("Win32_NetworkAdapterConfiguration");
            ManagementObjectCollection moc = wmi.GetInstances();
            foreach (ManagementObject mo in moc)
            {
                //如果没有启用IP设置的网络设备则跳过
                if (!(bool)mo["IPEnabled"])
                    continue;
                //重置DNS为空
                mo.InvokeMethod("SetDNSServerSearchOrder", null);
                //开启DHCP
                mo.InvokeMethod("EnableDHCP", null);
            }
        }

        

        //得到网关地址
        private string GetGateway()
        {
            //网关地址
            string strGateway = "";
            //获取所有网卡
            NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
            //遍历数组
            foreach (var netWork in nics)
            {
                //单个网卡的IP对象
                IPInterfaceProperties ip = netWork.GetIPProperties();
                //获取该IP对象的网关
                GatewayIPAddressInformationCollection gateways = ip.GatewayAddresses;
                foreach (var gateWay in gateways)
                {
                    //如果能够Ping通网关
                    if (IsPingIP(gateWay.Address.ToString()))
                    {
                        //得到网关地址
                        strGateway = gateWay.Address.ToString();
                        //跳出循环
                        break;
                    }
                }
                //如果已经得到网关地址
                if (strGateway.Length > 0)
                {
                    //跳出循环
                    break;
                }
            }
            //返回网关地址
            return strGateway;
        }

        public static bool IsPingIP(string strIP)
        {
            try
            {
                //创建Ping对象
                Ping ping = new Ping();
                //接受Ping返回值
                PingReply reply = ping.Send(strIP, 1000);
                //Ping通
                return true;
            }
            catch
            {
                //Ping失败
                return false;
            }
        }

        private string GetLocalIP()
        {
            //本机IP地址
            string strLocalIP = "";
            //得到计算机名
            string strPcName = Dns.GetHostName();
            //得到本机IP地址数组
            IPHostEntry ipEntry = Dns.GetHostEntry(strPcName);
            //遍历数组
            foreach (var IPadd in ipEntry.AddressList)
            {
                //判断当前字符串是否为正确IP地址
                if (IsRightIP(IPadd.ToString()))
                {
                    //得到本地IP地址
                    strLocalIP = IPadd.ToString();
                    //结束循环
                    break;
                }
            }
            //返回本地IP地址
            return strLocalIP;
        }

        public static bool IsRightIP(string strIPadd)
        {
            //利用正则表达式判断字符串是否符合IPv4格式
            if (Regex.IsMatch(strIPadd, "[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}"))
            {
                //根据小数点分拆字符串
                string[] ips = strIPadd.Split('.');
                if (ips.Length == 4 || ips.Length == 6)
                {
                    //如果符合IPv4规则
                    if (System.Int32.Parse(ips[0]) < 256 && System.Int32.Parse(ips[1]) < 256 & System.Int32.Parse(ips[2]) < 256 & System.Int32.Parse(ips[3]) < 256)
                        //正确
                        return true;
                    //如果不符合
                    else
                        //错误
                        return false;
                }
                else
                    //错误
                    return false;
            }
            else
                //错误
                return false;
        }

        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            System.Diagnostics.Process.Start("http://kaichengjj.tmall.com");
        }

        private void linkLabel2_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            System.Diagnostics.Process.Start("http://bbs.kacoc.com");
        }

        private void linkLabel3_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            System.Diagnostics.Process.Start("http://wpa.qq.com/msgrd?v=3&uin=31593768&site=qq&menu=yes");
        }
    }
}