//Check whether username is existing public JsonResult IsUserEmailExisting(string chkUserEmail) { FormsAuthenticationTicket ticket = null; try { _UserDetailsBusinessLogic = new UserDetailsBusinessLogic(); HttpCookie authCookie = System.Web.HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName]; ticket = authCookie == null?null:FormsAuthentication.Decrypt(authCookie.Value); bool isExisting = _UserDetailsBusinessLogic.IsUserEmailExisting(chkUserEmail); return(Json(isExisting)); } catch (Exception ex) { currentFile = this.ControllerContext.RouteData.Values["controller"].ToString(); // System.Diagnostics.StackTrace(true).GetFrame(0).GetFileName(); StackTrace st = new StackTrace(); StackFrame sf = st.GetFrame(0); methodName = sf.GetMethod().Name; ErrorLogHelper.UpdatingErrorLog(currentFile + "-" + methodName, ticket == null ? "N/A" : ticket.Name, ex); return(Json(false)); } }