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Posted 22 Dec 2003

Configuring TCP/IP Settings using WMI and C#

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


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(
 ManagementObjectCollection objMOC = objMC.GetInstances(); 
foreach(ManagementObject objMO in objMOC) 

          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("Printing IPGateway Info:"); 
          foreach(string sGate in gateways) 
               Console.WriteLine (sGate); 

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

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

          foreach(string sNet in subnets) 

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(
ManagementObjectCollection objMOC = objMC.GetInstances(); 

foreach(ManagementObject objMO in objMOC) 

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

          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); 

             "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


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

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Comments and Discussions

GeneralThanks very much ... Pin
funnyfrancois13-Jun-08 0:29
memberfunnyfrancois13-Jun-08 0:29 
GeneralThanx Pin
Nitin Sawant24-May-08 7:18
memberNitin Sawant24-May-08 7:18 
Generalbro help. i want to change ip if button click ip should change.i checked netsh but it disconnect net plz help Pin
Member 1247708623-Apr-16 2:35
memberMember 1247708623-Apr-16 2:35 
GeneralAwesome. Pin
remarkpk116-Jan-08 18:12
memberremarkpk116-Jan-08 18:12 
QuestionHow do you get the Default Gateway IP of a router? Pin
ebonnettit21-Jun-07 12:31
memberebonnettit21-Jun-07 12:31 
Generalusing SetIP only works for Gateway Pin
mystique200024-Sep-05 13:03
membermystique200024-Sep-05 13:03 
GeneralWoes on Win98 Pin
Magnus Persson25-Apr-04 22:03
memberMagnus Persson25-Apr-04 22:03 
GeneralRe: Woes on Win98 Pin
Anonymous21-Nov-04 23:38
sussAnonymous21-Nov-04 23:38 
GeneralRe: Woes on Win98 Pin
john anvet25-Jul-08 22:41
memberjohn anvet25-Jul-08 22:41 
QuestionDNS servers? Pin
Severedlimb8-Feb-04 9:42
memberSeveredlimb8-Feb-04 9:42 
AnswerHOw to change the IP of a linix machine? Pin
Thulasi ramu J15-Apr-04 1:26
memberThulasi ramu J15-Apr-04 1:26 
GeneralDifferent network adapters Pin
Alois Kraus5-Jan-04 3:47
memberAlois Kraus5-Jan-04 3:47 
GeneralRe: Different network adapters Pin
WaldenL10-Oct-05 6:21
memberWaldenL10-Oct-05 6:21 
GeneralRe: Different network adapters Pin
Roland_W25-Jan-06 22:39
memberRoland_W25-Jan-06 22:39 
Generalcorrect msdn link Pin
Daniel Fisher (lennybacon)30-Dec-03 0:34
memberDaniel Fisher (lennybacon)30-Dec-03 0:34 
GeneralRe: correct msdn link Pin
Xmen 13-Mar-09 17:18
member Xmen 13-Mar-09 17:18 
QuestionHow do I to Control NetworkAdapter state (enable or disenable ) in c#? Pin
moonlight21cn200124-Dec-03 20:12
membermoonlight21cn200124-Dec-03 20:12 
AnswerRe: How do I to Control NetworkAdapter state (enable or disenable ) in c#? Pin
uwgmxbscdbuwgmxbscdb6-Jul-06 6:55
memberuwgmxbscdbuwgmxbscdb6-Jul-06 6:55 
GeneralRe: How do I to Control NetworkAdapter state (enable or disenable ) in c#? Pin
--Simas--27-Apr-07 8:39
member--Simas--27-Apr-07 8:39 

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