在C#中更改IP地址

Question

我有一个 c# 程序，需要通过 UDP 连接连接到另一台计算机。为了执行此操作，我需要暂时更改计算机上网卡的 IP 地址，以便它们可以相互通信。我可以很好地做到这一点。然而，当我完成后，我想将我的IP地址恢复到以前的状态；也就是自动获取IP地址。

有人可以告诉我如何将设置更改回以前的设置吗？

谢谢，

菲尔

Answer 1

您可能需要检查此 SwitchNetConfig 项目。

您感兴趣的部分是如何更改IP：

public static void SetIP( string nicName, string IpAddresses, 
  string SubnetMask, string Gateway, string DnsSearchOrder)
{
  ManagementClass mc = new ManagementClass(
    "Win32_NetworkAdapterConfiguration");
  ManagementObjectCollection moc = mc.GetInstances();

  foreach(ManagementObject mo in moc)
  {
    // Make sure this is a IP enabled device. 

    // Not something like memory card or VM Ware

    if( mo["IPEnabled"] as bool )
    {
      if( mo["Caption"].Equals( nicName ) )
      {

        ManagementBaseObject newIP = 
          mo.GetMethodParameters( "EnableStatic" );
        ManagementBaseObject newGate = 
          mo.GetMethodParameters( "SetGateways" );
        ManagementBaseObject newDNS = 
          mo.GetMethodParameters( "SetDNSServerSearchOrder" );

        newGate[ "DefaultIPGateway" ] = new string[] { Gateway };
        newGate[ "GatewayCostMetric" ] = new int[] { 1 };

        newIP[ "IPAddress" ] = IpAddresses.Split( ',' );
        newIP[ "SubnetMask" ] = new string[] { SubnetMask };

        newDNS[ "DNSServerSearchOrder" ] = DnsSearchOrder.Split(',');

        ManagementBaseObject setIP = mo.InvokeMethod( 
          "EnableStatic", newIP, null);
        ManagementBaseObject setGateways = mo.InvokeMethod( 
          "SetGateways", newGate, null);
        ManagementBaseObject setDNS = mo.InvokeMethod( 
          "SetDNSServerSearchOrder", newDNS, null);

        break;
      }
    }
  }
}