MVC 3视图没有被模型后刷新提交 [英] MVC 3 The View is not being refreshed after model submit

问题描述

我有一个奇怪的问题，我在MVC 3项目视图。我有一个数据编辑（使用模板创建）的标准视图。当我提交表单，我改变了名称属性，但我回来从控制器浏览器后，我仍然看到 LOREM 值。为什么呢？

  @using（Html.BeginForm（））
    {
        @ Html.EditorFor（型号=＆GT; model.Name）
        ＆LT;输入类型=提交值=保存/＆GT;
    }
    公众的ViewResult EditUserData（INT ID）
    {
        [...]
        的UserData模式=新的UserData（）;
        model.Name =排版        返回视图（〜/查看/ UserDetails.cshtml模型）;
    }    [HttpPost]
    公众的ViewResult EditUserData（的UserData模型）
    {
        model.Name =文字;
        返回视图（〜/查看/ UserDetails.cshtml模型）;
    }公共类ControlUserData
{
    [...]    [需要]
    [显示（=的ResourceType typeof运算（资源），名称=UserNameFirst）]
    公共字符串名称{;组; }
}
 

解决方案

您需要从的ModelState 如果你想修改它在后/获取删除值

  [HttpPost]
公众的ViewResult EditUserData（的UserData模型）
{
    ModelState.Remove（姓名）;
    model.Name =文字;
    返回视图（〜/查看/ UserDetails.cshtml模型）;
}
 

这是内置的MVC behavoir：所有的 Html.Helpers $ P $在的ModelState 收集了实际的模型值。

有关于这这里的好文章：<一href=\"http://www.west-wind.com/weblog/posts/2012/Apr/20/ASPNET-MVC-Postbacks-and-HtmlHelper-Controls-ignoring-Model-Changes\">ASP.NET MVC回发和控件的HtmlHelper忽略模式更改。

I have a strange problem with my view in the MVC 3 project. I have a standard view for data editing (created using the template). When I submits the form, I change the Name property, but after I came back to the browser from the controller I still see the lorem value. Why ?

    @using (Html.BeginForm())
    { 
        @Html.EditorFor(model => model.Name)
        <input type="submit" value="Save"  />
    }


    public ViewResult EditUserData(int id)
    {
        [...]
        UserData model = new UserData();
        model.Name = "lorem";            

        return View("~/Views/UserDetails.cshtml", model);
    }

    [HttpPost]
    public ViewResult EditUserData(UserData model)
    {
        model.Name = "ipsum";
        return View("~/Views/UserDetails.cshtml", model);    
    }

public class ControlUserData
{
    [...]

    [Required]
    [Display(ResourceType = typeof(Resources), Name = "UserNameFirst")]
    public string Name { get; set; }
}

解决方案

You need to remove the value from the ModelState if you want to modify it in a post/get:

[HttpPost]
public ViewResult EditUserData(UserData model)
{
    ModelState.Remove("Name");
    model.Name = "ipsum";
    return View("~/Views/UserDetails.cshtml", model);    
}

This is the built in MVC behavoir: all the Html.Helpers prefers the values in the ModelState collection over the actual model values.

There is a good article about this here: ASP.NET MVC Postbacks and HtmlHelper Controls ignoring Model Changes.

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