How To Get IP Address Of A Machine

public static int Main (string [] args)
      {
    
        String strHostName = new String ("");
        if (args.Length == 0)
        {
            // Getting Ip address of local machine...

            // First get the host name of local machine.

            strHostName = DNS.GetHostName ();
            Console.WriteLine ("Local Machine's Host Name: " +  strHostName);
        }
        else
        {
            strHostName = args[0];
        }
      
        // Then using host name, get the IP address list..

        IPHostEntry ipEntry = DNS.GetHostByName (strHostName);
        IPAddress [] addr = ipEntry.AddressList;
      
        for (int i = 0; i < addr.Length; i++)
        {
            Console.WriteLine ("IP Address {0}: {1} ", i, addr[i].ToString ());
        }
        return 0;
      }