C#实现更改IP功能（原码）

using System;
using System.Management;

namespace ArLi.CommonPrj {
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);
}
}
}
}
}