ASP.NET MVC：绑定复杂类型到选择 [英] ASP.NET MVC: Binding a Complex Type to a Select

问题描述

我试图找出是否有内置的支持，结合复杂的类型，形成元素。

I am trying to work out if there is built-in support for binding complex types to form elements.

要使用一个共同的假设情况：
我有属于一类产品的实体 - 模特看起来像这样：

To use a common hypothetical situation: I have a Product entity that belongs to a Category - the models look something like this:

public class Product
{
    public int ID { get; set; }
    public string Description { get; set; }
    public Category Category { get; set; }
}
public class Category
{
    public int ID { get; set; }
    public string Title { get; set; }
}

创建表单来滋润只包含简单的值类型是好的，简单的使用ASP.Net MVC框架，例如一个新的实体：

Creating a form to hydrate a new entity that only contains simple value types is nice and simple using the ASP.Net MVC framework, e.g.:

public ActionResult Create(Product product);

但是，我们上面的场景，你的实体包含其他复杂类型？是否有内置的机制，结合一个IEnumerable＆LT; T ＆GT;一个下拉列表，然后自动补水正确的 T 当表​​单提交？

But what about the above scenario where your entities contain other complex types? Are there built-in mechanisms for binding an IEnumerable<T> to a drop down list and then automatically hydrating the correct T when the form is submitted?

这将是相当琐碎做手工 - 我只是想确定我可以有免费开箱

It would be fairly trivial to do it manually - I'm just trying to ascertain what I can have for free out of the box.

推荐答案

请参阅here和这里和<一个href=\"http://www.hanselman.com/blog/ASPNETWireFormatForModelBindingToArraysListsCollectionsDictionaries.aspx\">here有关模型的细节结合。

See here and here and here for details about model binding.

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