IP address change in C# web application

protected void Button1_Click(object sender, EventArgs e)
   {

       //setIP1("10.10.28.30", "255.255.255.0", "10.10.28.1");
     //  return;

       ManagementClass objMC = new ManagementClass("Win32_NetworkAdapterConfiguration");
       ManagementObjectCollection objMOC = objMC.GetInstances();

       Response.Write("<table>");
       int x=1;
       foreach (ManagementObject objMO in objMOC)
       {

           Response.Write("<tr><td>" + x.ToString() + "</td><td>");
           Response.Write(objMO.ToString());
           Response.Write("</td><td>");
           Response.Write(objMO["IPEnabled"].ToString());
           Response.Write("</td></tr>");
         //  Response.Write("</tr>");
          // txtObjvalue.Text = objMO["IPEnabled"].ToString();
          // Response.Write(objMO["IPEnabled"].ToString() + "<br />");
           x++;
           if ((bool)objMO["IPEnabled"])
           {

               ManagementBaseObject setIP;
               ManagementBaseObject newIP =
                   objMO.GetMethodParameters("EnableStatic");

               newIP["IPAddress"] = new string[] { ipa.Text.Trim() };
               newIP["SubnetMask"] = new string[] { subnet.Text.Trim() };

               setIP = objMO.InvokeMethod("EnableStatic", newIP, null);
           }

       }
       Response.Write("</table>");
   }