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【CSharp】实现动态分配IP和释放IP

作者:dezai / 发布于2014/6/20/ 517

由于因为网络IP设置是要涉及到硬件，C#是没有现成接口调用的。只能通过调用API或者是WMI这道系统提供给我们的桥梁.主要是通过"Win32_NetworkAdapterConfiguration"这个管理类。


	using System;
	using System.Collections.Generic;
	using System.Text;
	using System.Management;
	using System.Management.Instrumentation;
	using System.Collections;
	namespace J_Queen
	{
	class Program
	{
	static void Main(string[] args)
	{
	Dictionary<string, ManagementObject> allDevices = new Dictionary<string, ManagementObject>(); //保存管理对象
	List<string> listDescrIPtion = new List<string>(); //保存网卡描述
	//获得管理类实例和管理对象
	ManagementClass classInstance = new ManagementClass( "Win32_NetworkAdapterConfiguration" );
	ManagementObjectCollection bjectCollection = classInstance.GetInstances();
	foreach (ManagementObject obj in objectCollection)
	{
	//如果没有启用IP设置的网络设备则跳过
	if (!(bool)obj[ "IPEnabled" ])
	{
	continue;
	}
	//存储相关信息
	allDevices.Add((string)obj[ "DescrIPtion" ], obj);
	listDescrIPtion.Add((string)obj[ "DescrIPtion" ]);
	}
	for (int i = 0; i < listDescrIPtion.Count;i++ )
	{
	Console.WriteLine(i.ToString() + ": " + listDescrIPtion[i]);
	}
	Console.Write( "输入上面的数字编号(q：退出)，选择网卡：" );
	string xInput = Console.ReadLine();
	int deviceNumber;
	while (xInput != "q" )
	{
	if(!Int32.TryParse(xInput, out deviceNumber))
	{
	Console.Write( "输入错误,重新输入： " );
	xInput=Console.ReadLine();
	continue;
	}
	if (deviceNumber>listDescrIPtion.Count-1 || deviceNumber<0)
	{
	Console.Write( "输入的编号超出范围，重新输入： " );
	xInput=Console.ReadLine();
	continue;
	}
	if (allDevices.ContainsKey(listDescrIPtion[deviceNumber]))
	{
	Console.WriteLine( "1:表示释放IP(Release)，2:表示重新获得IP(Renew)" );
	string ptionInput = Console.ReadLine();
	int option;
	if(Int32.TryParse(optionInput, out option))
	{
	if(option ==1)
	{
	int returnValue = IPRelease((ManagementObject)allDevices[listDescrIPtion[deviceNumber]]);
	if (returnValue<2)
	{
	Console.WriteLine( "成功释放IP" );
	Console.Write( "输入上面网卡的数字编号(q：退出)，选择网卡：" );
	xInput=Console.ReadLine();
	continue;
	}
	}
	else if (option == 2)
	{
	int returnValue = IPRenew((ManagementObject)allDevices[listDescrIPtion[option]]);
	if (returnValue<2)
	{
	Console.WriteLine( "成功分配IP" );
	Console.Write( "输入上面网卡的数字编号(q：退出)，选择网卡：" );
	xInput = Console.ReadLine();
	continue;
	}
	}
	else
	{
	Console.WriteLine( "选择有误" );
	Console.Write( "输入上面网卡的数字编号(q：退出)，选择网卡：" );
	Console.ReadLine();
	continue;
	}
	}
	}
	}
	}
	/// <summary>
	/// Function:重新分配指定网卡的IP
	/// </summary>
	/// <param name="obj">ManagementObject obj --对应网卡的管理对象</param>
	/// <returns>返回值，整数，0和1表示成功</returns>
	public static int IPRenew(ManagementObject obj)
	{
	ManagementBaseObject utPar = null;
	utPar = obj.InvokeMethod( "RenewDHCPLease" , null, null);
	return Convert.ToInt32(outPar[ "returnValue" ]);
	}
	/// <summary>
	/// Function:释放指定网卡IP
	/// </summary>
	/// <param name="obj">ManagementObject obj--对应网卡的管理对象</param>
	/// <returns>返回值，整数，0和1表示成功</returns>
	public static int IPRelease(ManagementObject obj)
	{
	ManagementBaseObject utPar = null;
	utPar = obj.InvokeMethod( "ReleaseDHCPLease" , null, null);
	return Convert.ToInt32(outPar[ "returnValue" ] );
	}
	}

试试其它关键字

　分配IP　　释放IP　

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