如何访问传递到局部视图的匿名类型的对象吗？ [英] How do I access an anonymously-typed object passed into a partial view?

问题描述

我想从一个网页的一些参数（一对夫妇的字符串）传递给在主网页被渲染的局部视图。要做到这一点，我传递一个匿名类型的对象，它不断给我一个RuntimeBinderException。鉴于我已经试过，我并不感到惊讶中得到错误，但我不知道还有什么尝试。

I'm trying to pass some parameters (a couple of strings) from a page to a partial view that is to be rendered in the main page. To do this, I'm passing an anonymously typed object, which keeps giving me a RuntimeBinderException. Given what I've tried, I'm not surprised to be getting the error, but I don't know what else to try.

视图\\首页\\ PageWithPartialView.cshtml

@Html.Partial("DynamicPartialView", new { paramFromPageToPartialView = "value" })

视图\\共享\\ DynamicPartialView.cshtml

@model dynamic // Doesn't make a difference

@{
    // This is where I need to access and display the parameters 
    // passed from the main page

    // Throws RuntimeBinderException
    // Cannot apply indexing with [] to an expression of type 'object'
    var try1 = Model["paramFromPageToPartialView"];

    // Throws RuntimeBinderException
    // 'object' does not contain a definition for 'paramFromPageToPartialView'
    var try2 = Model.paramFromPageToPartialView;
}

如果局部视图不这样做的方式，我愿意。局部视图有几百行code的生产，所以定制HtmlHelpers似乎不便于管理我。

If partial views aren't the way to do this, I'm open. The partial view has a couple hundred lines of code to produce, so custom HtmlHelpers don't seem manageable to me.

推荐答案

的 ViewBag 旨在解决这类问题。而不是消耗 paramFromPageToPartialView 在部分从模式，从消费到 ViewBag ：

The ViewBag is designed to solve this kind of problem. Rather than consuming paramFromPageToPartialView in your partial from the Model, consume it from the ViewBag:

视图\\首页\\ PageWithPartialView.cshtml

@{ViewBag.paramFromPageToPartialView = "value";}
@Html.Partial("DynamicPartialView")

视图\\共享\\ DynamicPartialView.cshtml

@model dynamic // Doesn't make a difference

@{
    var try3 = ViewBag.paramFromPageToPartialView;
}

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