EditorTemplate中的MVC字典(MVC dictionary in EditorTemplate)

我不想将字典绑定到视图。但该模型似乎是空的。棘手的部分是我在另一个视图中使用视图，我无法弄清楚我的错误在哪里。

这是我到目前为止的代码：

第一种模式：

public class QuantityAndSize { private Dictionary<String, int> m_Size; public decimal Quantity {get;set;} public Dictionary<string,int> Size { get { return m_Size; } set { m_Size = value; } } public int SelectedItem {get;set;} public QuantityAndSize() { Quantity = 0; m_Size = new Dictionary<string, int>(); SelectedItem = 0; } }

第二个模型

public class NewItemDeliveryModel { #region - member - private string m_Subject; private QuantityAndSize m_ShortfallQuantity; #endregion #region - properties [Display(Name = "Betreff")] public string Subject { get { return m_Subject; } set { m_Subject = value; } } [Display(Name = "Fehlmenge")] public QuantityAndSize ShortfallQuantity { get { return m_ShortfallQuantity; } set { m_ShortfallQuantity = value; } } #endregion #region - ctor - public NewItemDeliveryModel() { m_ShortfallQuantity = new QuantityAndSize(); } #endregion }

在这里，我有一个NewItemDeliveryModel的视图

@model Web.Models.NewItemDeliveryModel @{ ViewBag.Title = "NewItemDelivery"; } <h2>NewItemDelivery</h2> @using (Html.BeginForm()) { <div class="form-horizontal"> <div class="form-group"> @Html.LabelFor(model => model.Subject, new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Subject) @Html.ValidationMessageFor(model => model.Subject) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.ShortfallQuantity, new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.ShortfallQuantity) @Html.ValidationMessageFor(model => model.ShortfallQuantity) </div> </div> </div> }

和QuantityAndSize的视图

@model Web.Models.Structures.QuantityAndSize <div class="form-group"> @Html.LabelFor(model => model.Quantity, new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Quantity) @Html.ValidationMessageFor(model => model.Quantity) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Size, new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.DropDownListFor(model => model.Size, new SelectList(Model.Size,"Key","Value"), "Sizes") //<-- Model.Size says that Model is null but i can't figure out why @Html.ValidationMessageFor(model => model.Size) </div> </div>

问题是，我无法将我的Dictionary绑定到Html.DropDownList，因为Model是Null。我是ASP.Net MVC的新手，问题本身似乎很简单，但我找不到错误的原因。所以我的问题是为什么我的模型等于Null？

BTW控制器非常小，但为了完整起见，它来了

public class NewItemDeliveryController : Controller { // GET: NewItemDelivery public ActionResult Index() { return View("NewItemDelivery"); } }

I wan't to bind a Dictionary to a View. But the model seems to be Null. The tricky part is that I use a view in another view and I can't figure out where my error is.

Here is my code so far:

First Model:

public class QuantityAndSize { private Dictionary<String, int> m_Size; public decimal Quantity {get;set;} public Dictionary<string,int> Size { get { return m_Size; } set { m_Size = value; } } public int SelectedItem {get;set;} public QuantityAndSize() { Quantity = 0; m_Size = new Dictionary<string, int>(); SelectedItem = 0; } }

Second Model

public class NewItemDeliveryModel { #region - member - private string m_Subject; private QuantityAndSize m_ShortfallQuantity; #endregion #region - properties [Display(Name = "Betreff")] public string Subject { get { return m_Subject; } set { m_Subject = value; } } [Display(Name = "Fehlmenge")] public QuantityAndSize ShortfallQuantity { get { return m_ShortfallQuantity; } set { m_ShortfallQuantity = value; } } #endregion #region - ctor - public NewItemDeliveryModel() { m_ShortfallQuantity = new QuantityAndSize(); } #endregion }

Here I have a the View for the NewItemDeliveryModel

@model Web.Models.NewItemDeliveryModel @{ ViewBag.Title = "NewItemDelivery"; } <h2>NewItemDelivery</h2> @using (Html.BeginForm()) { <div class="form-horizontal"> <div class="form-group"> @Html.LabelFor(model => model.Subject, new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Subject) @Html.ValidationMessageFor(model => model.Subject) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.ShortfallQuantity, new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.ShortfallQuantity) @Html.ValidationMessageFor(model => model.ShortfallQuantity) </div> </div> </div> }

and the View for the QuantityAndSize

@model Web.Models.Structures.QuantityAndSize <div class="form-group"> @Html.LabelFor(model => model.Quantity, new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Quantity) @Html.ValidationMessageFor(model => model.Quantity) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Size, new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.DropDownListFor(model => model.Size, new SelectList(Model.Size,"Key","Value"), "Sizes") //<-- Model.Size says that Model is null but i can't figure out why @Html.ValidationMessageFor(model => model.Size) </div> </div>

the Problem is, I can't bind my Dictionary to the Html.DropDownList because the Model is Null. I am fairly new to ASP.Net MVC and the problem itself seems simple but I can't find the cause for the error. So my question is why is my Model equal to Null ?

BTW the controller is very small but for the sake of completeness here it comes

public class NewItemDeliveryController : Controller { // GET: NewItemDelivery public ActionResult Index() { return View("NewItemDelivery"); } }