Get Local IP address in ASP.NET

public string GetLocalIPAddress()
        {
            string strIP = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
            if (!string.IsNullOrEmpty(strIP))
            {
                string[] ipRange = strIP.Split(',');
                strIP = ipRange[0];
            }
            else
            {
                strIP = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
            }
            return strIP;
        }

private string GetLocalIPAddress()
    {
        string strHostName = string.Empty;
        string localIP = "127.0.0.1"; //set a default value
        strHostName = Dns.GetHostName();
        IPHostEntry ipEntry = Dns.GetHostEntry(strHostName);
        IPAddress[] addr = ipEntry.AddressList;

        foreach (IPAddress ip in addr)
        {
            if (ip.AddressFamily == AddressFamily.InterNetwork)
            {
                localIP = ip.ToString();
            }
        }
        return localIP;
    }