自动修改IP地址

           这一段时间来，公司的网管不知道和谁学习的歪招，下了一个网管软件，动不动就踢人让我等良民无法正常上网，不过这个网管也傻，竟然没有做IP地址绑定，只要我改一个IP一样可以上网下东东，上网转了一圈发现有前人以写过修IP的类，不过没有检查IP冲突的判断，小弟我基于这个类花10几分钟加上了IP冲突写了一个自动修改IP地址的工具，方便又快，哈哈哈。。又可以上网下了。
以下是主要源程序。应付网管的小程序，所以没有用什么软件工程，有兴趣的朋友可以自已对手改一改。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.VisualBasic.MyServices;
namespace ChangIP
{
    public partial class NetWork : Form
    {
        public string MYIP = "";
        public NetWork()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            modify.ChangeIP o = new modify.ChangeIP();
            Random myIPNUM = new Random();
            int myNUM;
            bool ifOK = true;
            while (ifOK)
            {
                Microsoft.VisualBasic.Devices.Computer MyComputer =
                new Microsoft.VisualBasic.Devices.Computer();
                myNUM = myIPNUM.Next(2, 244);
                MYIP = "192.168.4." + myNUM.ToString();
                if (MyComputer.Network.Ping(MYIP))
                {
                    ifOK = true;
                }
                else
                {
                    ifOK = false;
                }

                //MessageBox.Show(myNUM.ToString());
            }
            string[] ipList = new string[] { MYIP};

            string[] subnetList = new string[] { "255.255.255.0" };

            o.ChangeTo(ipList, subnetList);
            MessageBox.Show("您的IP修改成功！，IP为：" + ipList[0].ToString());
        }
    }
}

using System;

using System.Management;

namespace modify
{

    public class ChangeIP
    {



        /**//// <summary> 

        /// Build of ArLi 2003.6.3 

        /// </summary> 

        public static readonly System.Version myVersion = new System.Version(1, 1);



        private ManagementBaseObject iObj = null;

        private ManagementBaseObject oObj = null;

        private ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");

        private readonly ManagementObjectCollection moc;



        /**//// <summary> 

        /// example: 

        /// <code> 

        /// ArLi.CommonPrj.ChangeIP o = new ArLi.CommonPrj.ChangeIP(); 

        /// string[] ipList = new string[]{"192.168.0.253","192.168.0.250"}; 

        /// string[] subnetList = new string[]{"255.255.255.0","255.255.255.0"}; 

        /// o.ChangeTo(ipList,subnetList); 

        /// </code> 

        /// </summary> 

        public ChangeIP()
        {

            moc = mc.GetInstances();

        }



        /**//// <summary>cortrol</summary> 

        /// <param name="ipAddr">IPAddr List</param> 

        /// <param name="subnetMask">subnetMask List</param> 

        public void ChangeTo(string[] ipAddr, string[] subnetMask)
        {

            foreach (ManagementObject mo in moc)
            {

                if (!(bool)mo["IPEnabled"]) continue;



                iObj = mo.GetMethodParameters("EnableStatic");

                iObj["IPAddress"] = ipAddr;

                iObj["SubnetMask"] = subnetMask;

                oObj = mo.InvokeMethod("EnableStatic", iObj, null);

            }

        }



        /**//// <summary>cortrol</summary> 

        /// <param name="ipAddr">IPAddr List</param> 

        /// <param name="subnetMask">subnetMask List</param> 

        /// <param name="gateways">gateway List</param> 

        /// <param name="gatewayCostMetric">gateway CostMetric List, example: 1</param> 

        public void ChangeTo(string[] ipAddr, string[] subnetMask, string[] gateways, string[] gatewayCostMetric)
        {

            foreach (ManagementObject mo in moc)
            {

                if (!(bool)mo["IPEnabled"]) continue;



                iObj = mo.GetMethodParameters("EnableStatic");

                iObj["IPAddress"] = ipAddr;

                iObj["SubnetMask"] = subnetMask;

                oObj = mo.InvokeMethod("EnableStatic", iObj, null);



                iObj = mo.GetMethodParameters("SetGateways");

                iObj["DefaultIPGateway"] = gateways;

                iObj["GatewayCostMetric"] = gatewayCostMetric;

                oObj = mo.InvokeMethod("SetGateways", iObj, null);

            }

        }



        /**//// <summary>cortrol</summary> 

        /// <param name="ipAddr">IPAddr List</param> 

        /// <param name="subnetMask">subnetMask List</param> 

        /// <param name="gateways">gateway List</param> 

        /// <param name="gatewayCostMetric">gateway CostMetric List, example: 1</param> 

        /// <param name="dnsServer">DNSServer List</param> 

        public void ChangeTo(string[] ipAddr, string[] subnetMask, string[] gateways, string[] gatewayCostMetric, string[] dnsServer)
        {

            foreach (ManagementObject mo in moc)
            {

                if (!(bool)mo["IPEnabled"]) continue;



                iObj = mo.GetMethodParameters("EnableStatic");

                iObj["IPAddress"] = ipAddr;

                iObj["SubnetMask"] = subnetMask;

                oObj = mo.InvokeMethod("EnableStatic", iObj, null);



                iObj = mo.GetMethodParameters("SetGateways");

                iObj["DefaultIPGateway"] = gateways;

                iObj["GatewayCostMetric"] = gatewayCostMetric;

                oObj = mo.InvokeMethod("SetGateways", iObj, null);



                iObj = mo.GetMethodParameters("SetDNSServerSearchOrder");

                iObj["DNSServerSearchOrder"] = dnsServer;

                oObj = mo.InvokeMethod("SetDNSServerSearchOrder", iObj, null);

            }

        }



        /**//// <summary>DHCPEnabled</summary> 

        public void EnableDHCP()
        {

            foreach (ManagementObject mo in moc)
            {

                if (!(bool)mo["IPEnabled"]) continue;



                if (!(bool)mo["DHCPEnabled"])
                {

                    iObj = mo.GetMethodParameters("EnableDHCP");

                    oObj = mo.InvokeMethod("EnableDHCP", iObj, null);

                }

            }

        }

    }

}