ASP.net MVC - 渲染包含不同类型的列表，以及每种类型有不同的看法 [英] ASP.net MVC - rendering a List containing different types, with a different view for each type

问题描述

想象我有实现所谓的接口对象的列表ISummary
该列表中的对象可以有附加属性IE浏览器。

Imagine I have a list of objects that implement an interface called ISummary The objects within this list MAY have additional properties ie.

public interface ISummary {
  Guid Id {get;set;}
  string Title {get;set;}
  DateTime Created {get;set;}
}

public class GigSummary: ISummary {
 Guid Id {get;set;}
 string Title {get;set;}
 DateTime Created {get;set;}
 string VenueName {get;set}
 string Band {get;set;}
}

public class NewsSummary: ISummary {
 Guid Id {get;set;}
 string Title {get;set;}
 DateTime Created {get;set;}
 string Author{get;set}
}

我现在通过演出和新闻摘要对象名单（截至ISummary列表）的视图模型。

I now pass this list of Gigs and News Summary objects (as a list of ISummary) to the view as the model.

我想用一个不同的部分为包含在列表中的每个类型来呈现这个列表。

I want to render this list using a different partial for each type contained in the list.

我怎样才能做到这一点是ASP.NET MVC？

How can I do this is ASP.NET MVC?

推荐答案

我能想到的最明显的方法是做这样的事情：

The most obvious way I can think of would be to do something like:

    foreach(ISummary summ in listOfISummary) {
    Html.RenderPartial(String.Fomat("~/Views/Shared/{0}Renderer.ascx", summ.GetType.ToString()), summ, ViewData);%>
}

和创建一个命名约定，如NewsSummaryRenderer.ascx一个强类型的视图。

and create a strongly typed view with a naming convention, like NewsSummaryRenderer.ascx.

我希望你能移动，虽然这出一个辅助方法，但我会通过扩展方法将其添加到现有的一个助手，而不是把它在一个code后面的建议previously

I expect that you could move this out to a helper method though, but I'd add it to one of the existing helpers through an extension method rather than putting it in a code behind as suggested previously.

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