to get IP_address

public string GetLocalIPAddress()
        {

            string IPAdd= string.Empty;

            System.Net.IPHostEntry hos = System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName());



            foreach (System.Net.IPAdd ip in hos.AddressList)
            {

                if (ip.AddressFamily.ToString() == "InterNetwork")
                {

                    IPAdd = ip.ToString();

                }

            }

            return IPAdd;

        }