获取错误消息，如果ModelState.IsValid失败了呢？ [英] Get error message if ModelState.IsValid fails?

问题描述

我有这个功能在我的控制器。

I have this function in my controller.

[HttpPost]
public ActionResult Edit(EmployeesViewModel viewModel)
{
    Employee employee = GetEmployee(viewModel.EmployeeId);
    TryUpdateModel(employee);

    if (ModelState.IsValid)
    {
        SaveEmployee(employee);
        TempData["message"] = "Employee has been saved.";
        return RedirectToAction("Details", new { id = employee.EmployeeID });
    }

    return View(viewModel); // validation error, so redisplay same view
}

它不断失败， ModelState.IsValid 保持返回false并重新显示视图。但我不知道是什么错误。

It keeps failing, ModelState.IsValid keeps returning false and redisplaying the view. But I have no idea what the error is.

有没有办法让错误并重新显示它给用户？

Is there a way to get the error and redisplay it to the user?

推荐答案

您可以通过使用做到这一点，而无须在你的行动做什么特别的你的看法<一个href=\"http://msdn.microsoft.com/en-us/library/system.web.mvc.html.validationextensions.validationsummary.aspx\">Html.ValidationSummary()显示所有的错误信息，或<一个href=\"http://msdn.microsoft.com/en-us/library/system.web.mvc.html.validationextensions.validationmessagefor%28v=vs.98%29.aspx\">Html.ValidationMessageFor()以示对模型的特定属性的消息。

You can do this in your view without doing anything special in your action by using Html.ValidationSummary() to show all error messages, or Html.ValidationMessageFor() to show a message for a specific property of the model.

如果你仍然需要从你的行动或控制器中出现的错误，请参阅<一个href=\"http://msdn.microsoft.com/en-us/library/system.web.mvc.modelstate.errors.aspx\">ModelState.Errors财产

If you still need to see the errors from within your action or controller, see the ModelState.Errors property

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