使用 WMI 和 C# 配置 TCP/IP 设置

• 下载源代码 - 5 Kb

引言

本文演示了 WMI 的强大功能，展示了如何使用 C# 以编程方式配置 TCP/IP 设置。本文面向中级开发人员。

使用代码

WMI 扩展了 .NET 的可能性，并在处理 NetworkAdapters 时简化了工作。以下代码片段列出了所有网络适配器以及 IP 地址、子网掩码和默认网关。

public void ListIP() 
{
 ManagementClass objMC = new ManagementClass(
    "Win32_NetworkAdapterConfiguration"); 
 ManagementObjectCollection objMOC = objMC.GetInstances(); 
 
foreach(ManagementObject objMO in objMOC) 
{ 
          if(!(bool)objMO["ipEnabled"]) 
                 continue; 


        
          Console.WriteLine(objMO["Caption"] + "," + 
            objMO["ServiceName"] + "," + objMO["MACAddress"]) ; 
          string[] ipaddresses = (string[]) objMO["IPAddress"]; 
          string[] subnets = (string[]) objMO["IPSubnet"]; 
          string[] gateways = (string[]) objMO["DefaultIPGateway"]; 

   
          Console.WriteLine("Printing Default Gateway Info:"); 
          Console.WriteLine(objMO["DefaultIPGateway"].ToString()); 
          
          Console.WriteLine("Printing IPGateway Info:"); 
          foreach(string sGate in gateways) 
               Console.WriteLine (sGate); 

 
          Console.WriteLine("Printing Ipaddress Info:"); 

          foreach(string sIP in ipaddresses) 
               Console.WriteLine(sIP); 
 
          Console.WriteLine("Printing SubNet Info:"); 

          foreach(string sNet in subnets) 
               Console.WriteLine(sNet);
}

现在，以下是使用 WMI 配置 TCP/IP 设置的代码。

public void setIP(string IPAddress,string SubnetMask, string Gateway) 
{ 
 
ManagementClass objMC = new ManagementClass(
    "Win32_NetworkAdapterConfiguration"); 
ManagementObjectCollection objMOC = objMC.GetInstances(); 

 
foreach(ManagementObject objMO in objMOC) 
{ 

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


 
      try 
        { 
          ManagementBaseObject objNewIP = null; 
          ManagementBaseObject objSetIP = null; 
          ManagementBaseObject objNewGate = null; 

          
          objNewIP = objMO.GetMethodParameters("EnableStatic"); 
          objNewGate = objMO.GetMethodParameters("SetGateways"); 
          


          //Set DefaultGateway
          objNewGate["DefaultIPGateway"] = new string[] {Gateway}; 
          objNewGate["GatewayCostMetric"] = new int[] {1}; 
          

          //Set IPAddress and Subnet Mask
          objNewIP["IPAddress"] = new string[] {IPAddress}; 
          objNewIP["SubnetMask"] = new string[] {SubnetMask}; 
          
          objSetIP = objMO.InvokeMethod("EnableStatic",objNewIP,null); 
          objSetIP = objMO.InvokeMethod("SetGateways",objNewGate,null); 


          
          Console.WriteLine(
             "Updated IPAddress, SubnetMask and Default Gateway!"); 


        
        } 
        catch(Exception ex) 
        { 
              MessageBox.Show("Unable to Set IP : " + ex.Message); } 
        }

Win32_NetworkAdapterConfiguration WMI 类中包含一些有趣的方法，这些方法代表网络适配器的行为和属性，请在 http://msdn.microsoft.com/library/en-us/wmisdk/wmi/ 处探索它们。