asp.net-mvc - ASP.NET MVC 中的模型验证

Question

我没有收到验证消息？知道如何解决吗？请看下面的视图、模型和控制器代码。我还附加了 js 文件，可能我缺少文件？

@model MvcApplication1.Models.Assesment
<link href="../../Content/Site.css" rel="stylesheet" type="text/css" />
<script src="../../Scripts/jquery.validate.min.js" type="text/javascript"></script>
<script src="../../Scripts/jquery.validate.min.js" type="text/javascript"></script>

@using (Html.BeginForm())
{    
   @Html.TextBoxFor(m => m.name)
   @Html.ValidationMessageFor(m=>m.name,"*Hello")

}
<input type="submit" value="submit" />

---

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Web.Mvc;
using System.ComponentModel.DataAnnotations;

namespace MvcApplication1.Models
{
   public class Assesment
   {   
    [Required]
    public string name { get; set; }
    }
}

public class RegisterController : Controller
{

    [HttpGet]
    public ActionResult Index()
    {
        return View();
    }

     [HttpPost]
     public ActionResult Index(Assesment assesment)
     {
         return View();
     }
}

Answer 1

您<input type="submit">应该在表格内。

此外，您应该在处理 POST 时将无效模型传递给视图

[HttpPost]
public ActionResult Index(Assesment assesment)
{
    return View(assesment);
}

顺便说一下，一个典型的HttpPost动作是这样的：

[HttpPost]
public ActionResult Index(Assesment assesment)
{
    if( ModelState.IsValid )
    {
        // Handle POST data (write to DB, etc.)
        //...
        // Then redirect to a new page
        return RedirectToAction( ... );
    }

    // show the same view again, this time with validation errors
    return View(assesment);
}