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Configuring TCP/IP Settings using WMI and C#

, 22 Dec 2003
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Configure TCP/IP Settings using WMI and C#

Introduction

This article demonstrates the power of WMI, on how to configure TCP/IP Setting programmatically using C#. This article is targeted at intermediate developers.

Using the code

WMI Extends the possibilities of .NET and simplifies the life while working on NetworkAdapters. The Following Code snippet lists all the Network adapters along with the IP Address, Subnet Mask, Default Gateway

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);
}

Now, here is the code to configure TCP/IP Settings using WMI.

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); } 
        }

There are some interesting methods in the Win32_NetworkAdapterConfiguration WMI Class, which represents the behaviour and attributes of a NetworkAdapter, explore them at http://msdn.microsoft.com/library/en-us/wmisdk/wmi/

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

About the Author

Logu Krishnan
Web Developer
India India
No Biography provided

Comments and Discussions

 
Questionabout static ip address PinmemberBhavya MM6-Sep-12 17:59 
QuestionAbout static ip address PinmemberBhavya MM6-Sep-12 2:44 
QuestionHow to set the default gateway ip to empty or none Pinmembergeykelraul25-Jul-11 9:10 
AnswerRe: How to set the default gateway ip to empty or none PinmemberMauri Ketonen13-Nov-11 7:48 
First set DHCP on via
mgObject.InvokeMethod("EnableDHCP", Nothing)
then set just IP address and subnetmask.
QuestionReturn code for ReleaseDHCPLeaseAll PinmemberTAHAIC5-Jun-09 1:03 
Generalthanks Pinmember Xmen 13-Mar-09 7:50 
GeneralipEnabled Vista Pinmemberceeyt_pp30-Oct-08 6:09 
GeneralRe: ipEnabled Vista Pinmember Xmen 13-Mar-09 17:09 
Generalsetting DNS as well Pinmembersbini16-Jul-08 4:55 
GeneralThanks very much ... Pinmemberfunnyfrancois12-Jun-08 23:29 
GeneralThanx PinmemberNitin Sawant24-May-08 6:18 
GeneralAwesome. Pinmemberremarkpk116-Jan-08 17:12 
QuestionHow do you get the Default Gateway IP of a router? Pinmemberebonnettit21-Jun-07 11:31 
Generalusing SetIP only works for Gateway Pinmembermystique200024-Sep-05 12:03 
GeneralWoes on Win98 PinmemberMagnus Persson25-Apr-04 21:03 
GeneralRe: Woes on Win98 PinsussAnonymous21-Nov-04 22:38 
GeneralRe: Woes on Win98 Pinmemberjohn anvet25-Jul-08 21:41 
QuestionDNS servers? PinmemberSeveredlimb8-Feb-04 8:42 
AnswerHOw to change the IP of a linix machine? PinmemberThulasi ramu J15-Apr-04 0:26 
GeneralDifferent network adapters PinmemberAlois Kraus5-Jan-04 2:47 
GeneralRe: Different network adapters PinmemberWaldenL10-Oct-05 5:21 
GeneralRe: Different network adapters PinmemberRoland_W25-Jan-06 21:39 
Generalcorrect msdn link PinmemberDaniel Fisher (lennybacon)29-Dec-03 23:34 
GeneralRe: correct msdn link Pinmember Xmen 13-Mar-09 16:18 
QuestionHow do I to Control NetworkAdapter state (enable or disenable ) in c#? Pinmembermoonlight21cn200124-Dec-03 19:12 

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