默认模型绑定器和包含列表的复杂类型 [英] Default model binder and complex types that include a list
问题描述
我使用的是 ASP.NET MVC 的 RC1.
I'm using RC1 of ASP.NET MVC.
我正在尝试扩展 PhilHaack 的 模型绑定示例.我正在尝试使用默认模型绑定器来绑定以下对象:
I'm trying to extend Phil Haack's model binding example. I'm trying to use the default model binder to bind the following object:
public class ListOfProducts
{
public int Id { get; set; }
public string Title{ get; set; }
List<Product> Items { get; set; }
}
public class Product
{
public string Name { get; set; }
public decimal Price { get; set; }
}
我正在使用 Phil 示例中的代码并进行了一些更改:
I'm using the code from Phil's example with some alterations:
控制器:
using System.Collections.Generic;
using System.Web.Mvc;
namespace TestBinding.Controllers
{
[HandleError]
public class HomeController : Controller
{
public ActionResult Index()
{
ViewData["Message"] = "Welcome to ASP.NET MVC!";
return View();
}
//Action method on HomeController
public ActionResult UpdateProducts(ListOfProducts productlist)
{
return View(productlist);
}
}
public class Product
{
public string Name { get; set; }
public decimal Price { get; set; }
}
public class ListOfProducts
{
public int Id { get; set; }
public string Title { get; set; }
List<Product> Items { get; set; }
}
}
查看:
<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>
<asp:Content ID="indexHead" ContentPlaceHolderID="head" runat="server">
<title>Home Page</title>
</asp:Content>
<asp:Content ID="indexContent" ContentPlaceHolderID="MainContent" runat="server">
<form method="post" action="/Home/UpdateProducts">
<input type="text" name="productlist.id" value="99" />
<input type="text" name="productlist.Title" value="SomeTitle" />
<input type="hidden" name="productlist.Index" value="0" />
<input type="text" name="productlist.items[0].Name" value="Beer" />
<input type="text" name="productlist.items[0].Price" value="7.32" />
<input type="hidden" name="productlist.Index" value="1" />
<input type="text" name="productlist.Items[1].Name" value="Chips" />
<input type="text" name="productlist.Items[1].Price" value="2.23" />
<input type="hidden" name="productlist.Index" value="2" />
<input type="text" name="productlist.Items[2].Name" value="Salsa" />
<input type="text" name="productlist.Items[2].Price" value="1.23" />
<input type="submit" />
</form>
</asp:Content>
我的问题是简单类型(Id 和 Title)出现在 productlist 对象中,但没有出现在 List 中.所以:
My problem is that the simple types (Id and Title) appears in the productlist object, but not the List. So:
- 我的代码是不是很糟糕(不会感到惊讶)?
- 默认模型绑定器能否处理 ListOfProducts 对象?
- 如果默认模型绑定器无法处理此类对象,我需要做什么(如果可能,请提供示例)?
提前致谢.
推荐答案
回答我自己的问题:
我是个傻瓜!
我的示例不起作用,因为 ListOfProducts 类的 Items 属性不是公开的:
My example doesn't work because the Items property of the ListOfProducts class is not public:
public class ListOfProducts
{
public int Id { get; set; }
public string Title{ get; set; }
List<Product> Items { get; set; }
}
我改变了:
List<Product> Items { get; set; }
到:
public List<Product> Items { get; set; }
然后我的代码就可以工作了.
and my code then worked.
总结默认模型绑定器确实适用于包含 List 类型属性的类型.
To conclude the default model binder does work with types that contain properties of type List.
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