public Response Register(RegisterRequest request) { Response retval = new RegisterResponseOk("You registered successfuly"); try { // first check if user exist var ds = _dal.GetUser(request.Login.UserIdEmail); if (ds.Tables[0].Rows.Count == 0) { _dal.CreateUser(request); } else { retval = new RegisterResponseUserExist("User exist"); } } catch (Exception ex) { retval = new AppResponseError(ex.Message); } return(retval); }