public JsonResult Checkmobile(string MobileNo, string previousnumber)
        {
            if (MobileNo == previousnumber)
            {
                return(Json(true, JsonRequestBehavior.AllowGet));
            }
            bool check = Commonhelper.Checkmobile(MobileNo);

            if (check)
            {
                return(Json("Mobile no in use.", JsonRequestBehavior.AllowGet));
            }
            else
            {
                return(Json(true, JsonRequestBehavior.AllowGet));
            }
        }