我已经被困一个很长的时间来修改我的模型的一个子集，模型的集合来了空。

I've been stuck a long time to edit a subcollection of my model, the collection of the model was coming null.

我终于找到了一个解决办法，但我觉得有点脏的：

I finally found a solution, but I find it a little dirty:

首先我的测试DATAS：

First my tests datas:

Model对象

    public class ContainerObject
    {
        public String Title { get; set; }
        public List<ContainedObject> ObjectList { get; set; }
    }

分集合对象

public class ContainedObject
{
    public int Id { get; set; }
    public String Text { get; set; }
    public Boolean IsSelected { get; set; }
}

这生成目标控制方法

    public ActionResult TestForm()
    {
        return View(new ContainerObject()
        {
            Title = "This is a sample title",
            ObjectList = new List<ContainedObject>()
                {
                    new ContainedObject(){Id=1, IsSelected = true, Text="ObjectOne"},
                    new ContainedObject(){Id=2, IsSelected = false, Text="ObjectTwo"},
                    new ContainedObject(){Id=3, IsSelected = true, Text="ObjectThree"},
                    new ContainedObject(){Id=4, IsSelected = false, Text="ObjectFour"},
                }
        });
    }

控制器，收到编辑的对象

    [HttpPost]
    public ActionResult TestFormResult(ContainerObject filledObject)
    {
        return View();
    }

视图

@model WebTestApplication.Models.ContainerObject

@{
    ViewBag.Title = "TestForm";
}
@using (Html.BeginForm("TestFormResult","Home", FormMethod.Post)){
    @Html.EditorFor(x => x.Title)
    Html.RenderPartial("ContainedObject", Model.ObjectList);
    <input type="submit"  value="Submit"/>
}

局部视图（ContainedObject.cshtml）

@model IEnumerable<WebTestApplication.Models.ContainedObject>
@{
    ViewBag.Title = "ContainedObject";
    int i = 0;
}
@foreach (WebTestApplication.Models.ContainedObject currentObject in Model)
{ 
    <br />
    @Html.Label(currentObject.Text);
    @Html.CheckBox("ObjectList[" + i + "].IsSelected", currentObject.IsSelected);                                                                                                     
    @Html.Hidden("ObjectList[" + i + "].Id", currentObject.Id);                                                                                                
    @Html.Hidden("ObjectList[" + i + "].Text", currentObject.Text);
    i++;
}

这是实际工作，但是我有一个问题：

This is actually working, but I've one problem:

我试图用 Html.EditorFor ，而不是 Html.RenderPartial 中的观点，问题是它生成我的名字链表。[0] .ID（具有附加。属性名和存取之间）

I tried to use Html.EditorFor instead of Html.RenderPartial in the view, the problem is that it generate me the name "ObjectList.[0].Id"(with a additional . between the property name and the accessor).

我还试图用仅@ Html.EditorFor在局部视图，但它创建瓦尔与对象的名称。

I also tried to use only @Html.EditorFor in the partial view, but it create vars with the name of the object.

如果我不使用任何模板，它的工作原理：

If I don't use any template, it works:

    @model WebTestApplication.Models.ContainerObject

@{
    ViewBag.Title = "TestForm";
}
@using (Html.BeginForm("TestFormResult", "Home", FormMethod.Post))
{
    @Html.EditorFor(x => x.Title)
    for (int i = 0; i < Model.ObjectList.Count; i++)
    {
        <br />
        @Html.Label(Model.ObjectList[i].Text);
        @Html.CheckBoxFor(m => Model.ObjectList[i].IsSelected);
        @Html.HiddenFor(m => Model.ObjectList[i].Id);
        @Html.HiddenFor(m => Model.ObjectList[i].Text);
    }

    <br /><input type="submit"  value="Submit"/>
}

但在这里它是一个简单的模板，但在我的真实情况，我将有更多的数据，这将被重新使用的多个时间。那么，什么是我最好的选择？

But here it's a simple template, but in my real case, I will have much more data, and this will be re-used multiple time. So what is my best option?

推荐答案

您可以简化您code。通过引入EditorTemplate。方法如下：

You can simplify your code by introducing the EditorTemplate. Here is how:

TestForm.cshtml

@model WebTestApplication.Models.ContainerObject

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

@using (Html.BeginForm("TestFormResult", "Home", FormMethod.Post)) {
    @Html.EditorFor(m => m.Title)
    @Html.EditorFor(m => m.ObjectList);

    <input type="submit" value="Submit" />
}

然后下创建一个文件夹名为 EditorTemplates 的查看/首页的（假设你的控制器主页）：

Then create a folder named EditorTemplates under Views/Home (assuming your controller is Home):

ContainedObject.cshtml

@model WebTestApplication.Models.ContainedObject

<p>
    @Html.DisplayFor(m => m.Text)
    @Html.CheckBoxFor(m => m.IsSelected)
    @Html.HiddenFor(m => m.Id)
    @Html.HiddenFor(m => m.Text)
</p>

，编辑器会自动通过物体渲染视图为每个列表循环。希望它能帮助。

The editor will automatically iterate through the list of objects rendering the view for each of them. Hope it helps.