get IP address from client machine

public string GetIPAddress()

    {

        System.Web.HttpContext context = System.Web.HttpContext.Current;

        string MyIP = context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];

        if (!string.IsNullOrEmpty(MyIP))

        {

            string[] addresses = MyIP.Split(',');

            if (addresses.Length != 0)

            {

                return addresses[0];

            }

        }

        return context.Request.ServerVariables["REMOTE_ADDR"];

    }

//And You can calll this method as following where you want get the IP Client Address

string ip = GetMyIPAddress();