public async Task <IActionResult> Create(StudentViewModel studentViewModel) { try { _cache.Remove("ErrorData"); ViewBag.ErrorData = null; // 视图模型验证 if (!ModelState.IsValid) { return(View(studentViewModel)); } #region 除命令验证 //添加命令验证,采用构造函数方法实例 //RegisterStudentCommand registerStudentCommand = new RegisterStudentCommand(studentViewModel.Name, studentViewModel.Email, studentViewModel.BirthDate, studentViewModel.Phone); //如果命令无效,证明有错误 //if (!registerStudentCommand.IsValid()) //{ // List<string> errorInfo = new List<string>(); //获取到错误,请思考这个Result从哪里来的 // foreach (var error in registerStudentCommand.ValidationResult.Errors) // { // errorInfo.Add(error.ErrorMessage); // } //对错误进行记录,还需要抛给前台 // ViewBag.ErrorData = errorInfo; return View(studentViewModel); //} #endregion // 执行添加方法 await _studentAppService.AddAsync(studentViewModel); if (!_notifications.HasNotifications()) { ViewBag.Sucesso = "Student Registered!"; } return(View(studentViewModel)); } catch (Exception e) { return(View(e.Message)); } }