Asp.net mvc MVC3不引人注目的Ajax-不反映模型的局部视图

除了在插入对象后返回带有模型的分部时（该模型具有

NAME=“foo”

），它不会使用模型中的值更改名称和百分比文本框外，所有操作似乎都按预期进行

当我通过验证消息在部分的标题中输出

@Model.Name

时，它正确地显示

“foo”

。但表单上仍然显示了提交时文本框中的内容

HTML

---

如果要更改控制器后操作中的值，必须清除modelstate。HTML助手在绑定时首先查看modelstate，然后查看模型。因此：

[HttpPost]
public ActionResult Create(BeerCreateModel model)
{
    if (ModelState.IsValid)
    {
        //Add Beer to DB

        // Here you are modifying the value of the Name parameter
        // in your model. But this parameter is also in ModelState.
        // So if you want this change to reflect on the subsequent view you
        // need to either clear it from the modelstate
        ModelState.Remove("Name");
        return PartialView("CreatePartial", new BeerCreateModel { Name = "foo"});
    }
    else
    {
        return PartialView("CreatePartial", model);
    }
}

---

仅仅做一个模型有什么副作用吗？Clear（）？这个想法是表单将处于模式中，如果成功，我想加载一个空白表单并隐藏模式。@Blankasaurus，是的，您正在擦除整个模型状态以及任何验证错误。如果你不在乎这件事，那么你可以做。

@{
    AjaxOptions options = new AjaxOptions
    {
        HttpMethod = "Post",
        UpdateTargetId = "createBeerForm", 
        InsertionMode = InsertionMode.Replace
    };        
}

@using (Ajax.BeginForm("Create", "Beer", null, options, new { @class = "form-stacked" }))
{
    @Html.ValidationSummary(true, "You have errors. Fix them.")
    @Html.LabelFor(m => m.Name)
    <div>
        @Html.TextBoxFor(m => m.Name, new { @class = "xlarge" })  
        @Html.ValidationMessageFor(m => m.Name)
    </div>
    @Html.LabelFor(m => m.PercentAlcohol)
    <div>
        @Html.TextBoxFor(m => m.PercentAlcohol, new { @class = "xlarge" }) 
        @Html.ValidationMessageFor(m => m.PercentAlcohol)
    </div>
    <p>
        <input type="submit" value="Create Beer" />
    </p>
}

    [HttpPost]
    public ActionResult Create(BeerCreateModel model)
    {
        if (ModelState.IsValid)
        {
            //Add Beer to DB
            return PartialView("CreatePartial", new BeerCreateModel { Name = "foo"});
        }
        else
        {
            return PartialView("CreatePartial", model);
        }
    }

[HttpPost]
public ActionResult Create(BeerCreateModel model)
{
    if (ModelState.IsValid)
    {
        //Add Beer to DB

        // Here you are modifying the value of the Name parameter
        // in your model. But this parameter is also in ModelState.
        // So if you want this change to reflect on the subsequent view you
        // need to either clear it from the modelstate
        ModelState.Remove("Name");
        return PartialView("CreatePartial", new BeerCreateModel { Name = "foo"});
    }
    else
    {
        return PartialView("CreatePartial", model);
    }
}