Question

我有一个视图模型

public class DeviceModelEntryViewModel
{
    public int ID { get; set; }

    [Required]
    [MaxLength(255)]
    public String Model { get; set; }

    [MaxLength(255)]
    public String Description { get; set; }

    [Required]
    [Display(Name = "Manufacturer")]
    public int ManufacturerID { get; set; }

    public SelectList ManufacturerList { get; set; }
}

在DeviceModelController中我的Create方法是这样的：

[HttpPost]
public ActionResult Create(DeviceModelEntryViewModel model)
{
    if (ModelState.IsValid)
    {
        ...
        return RedirectToAction("Edit", new { id });  
    }

    return View(model);
}

创建视图如下：

@model ICMDB.ViewModels.DeviceModelEntryViewModel

@{ ViewBag.Title = "ICMD - Create Device Model"; }

<h2>Create Device Model</h2>

<div class="form-div">
    @using (Html.BeginForm()) {
        @Html.ValidationSummary(true)

        <fieldset>
            <div class="editor-label">
                @Html.LabelFor(model => model.Model)
            </div>
            <div class="editor-field">
                @Html.EditorFor(model => model.Model)
                @Html.ValidationMessageFor(model => model.Model)
            </div>

            <div class="editor-label">
                @Html.LabelFor(model => model.Description)
            </div>
            <div class="editor-field">
                @Html.EditorFor(model => model.Description)
                @Html.ValidationMessageFor(model => model.Description)
            </div>

            <div class="editor-label">
                @Html.LabelFor(model => model.ManufacturerID)
            </div>
            <div class="editor-field">
                @Html.DropDownListFor(model => model.ManufacturerID, 
                                      Model.ManufacturerList, "--None--")
                @Html.ValidationMessageFor(model => model.ManufacturerID)
            </div>
        </fieldset>

        <input type="submit" value="Save" class="form-button"/>
    }

    @using (Html.BeginForm("Index", "DeviceModel"))
    { <input type="submit" value="Cancel" class="form-button"/> }       
</div>

出于某种原因，只要命中此函数（或具有类似声明的Edit函数），model为空。我查了一下，它甚至没有点击DeviceModelEntryViewModel的零arg构造函数。我已经为所有其他控制器使用适当的视图模型完成了这项工作，并且它们都能正常工作。我似乎无法看到阻止它工作的那个区别。

有什么想法吗？

Answer 1

尝试将Model属性的名称更改为：

public String ModelName { get; set; }

不要忘记更新您的观点。我认为应该让它正常工作，因为模型这个词看起来像一个保留字并且混淆了模型绑定器。

编辑：以下是Razor / MVC中保留字的列表：Razor reseverd words

在POST函数调用中未创建ViewModel

1 个答案: