public UniversalResposeModel userLogin(LoginModel _UserInput)
 {
     if (ModelState.IsValid)
     {
         var ret = new UniversalResposeModel();
         try
         {
             var userReturnModel = sqlOp.userLogin(_UserInput.UserName, _UserInput.Password);
             ret.SetCode(ResponseCode.SUCCESS);
             ret.SetMessage("Request completed successfully!");
             ret.SetResult(userReturnModel);
             return(ret);
         }
         catch (ExceptionDefines.UserNotFoundEx ex)
         {
             ret.SetCode(ResponseCode.NOT_FOUND);
             ret.SetMessage("Wrong username or password!");
             ret.SetResult(null);
             return(ret);
         }
         catch (ExceptionDefines.InternalErrorEx ex)
         {
             ret.SetCode(ResponseCode.INTERNAL_ERROR);
             ret.SetMessage("Internal server error!");
             ret.SetResult(null);
             Console.WriteLine(ex.ToString());
             return(ret);
         }
     }
     else
     {
         var ret = new UniversalResposeModel();
         ret.SetCode(ResponseCode.BAD_REQUEST);
         ret.SetMessage("Missing required request field(s)!");
         ret.SetResult(null);
         return(ret);
     }
 }