最近在做一個東西，要用到動態分配IP和釋放IP。在C++下很容易就可以實現。但是由於因為網絡IP設置是要涉及到硬件,C#是沒有現成接口調用的.只能通過調用API或者是WMI這道系統提供給我們的橋梁.主要是通過"Win32_NetworkAdapterConfiguration"這個管理類。
下面附上我寫的一個Demo，希望對需要的朋友有幫助，更希望高手來拍磚。
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>(); //保存管理對象
List<string> listDescription = new List<string>(); //保存網卡描述
//獲得管理類實例和管理對象
ManagementClass classInstance = new ManagementClass( "Win32_NetworkAdapterConfiguration" );
ManagementObjectCollection bjectCollection = classInstance.GetInstances();
foreach (ManagementObject obj in objectCollection)
{
//如果沒有啟用IP設置的網絡設備則跳過
if (!(bool)obj[ "IPEnabled" ])
{
continue;
}
//存儲相關信息
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( "輸入上面的數字編號(q：退出)，選擇網卡：" );
string xInput = Console.ReadLine();
int deviceNumber;
while (xInput != "q" )
{
if(!Int32.TryParse(xInput, out deviceNumber))
{
Console.Write( "輸入錯誤,重新輸入： " );
xInput=Console.ReadLine();
continue;
}
if (deviceNumber>listDescription.Count-1 || deviceNumber<0)
{
Console.Write( "輸入的編號超出范圍，重新輸入： " );
xInput=Console.ReadLine();
continue;
}
if (allDevices.ContainsKey(listDescription[deviceNumber]))
{
Console.WriteLine( "1:表示釋放IP(Release)，2:表示重新獲得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( "成功釋放IP" );
Console.Write( "輸入上面網卡的數字編號(q：退出)，選擇網卡：" );
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( "輸入上面網卡的數字編號(q：退出)，選擇網卡：" );
xInput = Console.ReadLine();
continue;
}
}
else
{
Console.WriteLine( "選擇有誤" );
Console.Write( "輸入上面網卡的數字編號(q：退出)，選擇網卡：" );
Console.ReadLine();
continue;
}
}
}
}
}
/// <summary>
/// Function:重新分配指定網卡的IP
/// </summary>
/// <param name="obj">ManagementObject obj --對應網卡的管理對象</param>
/// <returns>返回值，整數，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:釋放指定網卡IP
/// </summary>
/// <param name="obj">ManagementObject obj--對應網卡的管理對象</param>
/// <returns>返回值，整數，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" ] );
}
}
}
