Question

我有一个像这样的数据库模型的简单类

Student.cs
public class Student{
    public long Id; //database generated and key. 
    public string name; //simple name
    public virtual StudentData data; //reference to another data
}

StudentData.cs    
public class StudentData {
    public long Id { get;set; } //database generated and key
    public string CityName {get;set; } //simple and dummy data
}

public ActionResult CityName_Read([DataSourceRequest]DataSourceRequest request)
{
     IQueryable<City> cities= db.City;
     DataSourceResult result = cities.ToDataSourceResult(request, city =>  new {
     Id = city.Id,
     CityName = city.CityName
     });

     return Json(result);
 }

我还有StudentData的编辑模板

StudentDataDropdownList.cshtml
@model MyProj.Models.StudentData
@{ 
    Html.Kendo().DropDownListFor(m => m.Id)
        .DataValueField("Id")
        .DataTextField("CityName")
        .DataSource(source =>
        {
            source.Read("CityName_Read", "City");
        });
}

最后，为学生创建页面（假设城市主数据已经可用）

@model MyProj.Models.Student

@{
    ViewBag.Title = "Create";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>Create</h2>


@using (Html.BeginForm()) 
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Student Data</h4>
        <hr />
        @Html.ValidationSummary(true)
        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-5">
                @Html.EditorFor(model => model.Name)
                @Html.ValidationMessageFor(model => model.Name)
            </div>
            @Html.LabelFor(model => model.StudentData)
            <div class="col-md-5">
     @Html.EditorFor(model => model.StudentData, "StudentDataDropdownList")                   
            </div>                
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" />
            </div>
        </div>
    </div>
}

结果是名称文本框正在显示，但我想要的那个下拉列表不存在。就像它没有被召唤一样。有什么我想念的吗？

我不想将ViewModel用于此数据，因为除了StudentData之外的所有其他数据都只是简单的字符串或长。

模型中关系的Kendo MVC DropdownList

0 个答案: