MVC4 - ContextDependentView - 这是什么意思？ [英] MVC4 - ContextDependentView - What does it mean?

问题描述

我刚开始使用MVC4，而且我看一下有没有新的东西的第一个动作方法。我检查了互联网，找不到这事：

I have just started using MVC4 and the first action method that I look at has something new. I checked out the internet and can't find anything about this:

public ActionResult LogOn()
        {
            return ContextDependentView();
        }

有谁知道ContextDependentView是什么？

Does anyone know what a ContextDependentView is ?

新的东西给我。

推荐答案

它的目的是为了便于登录查看或PartialView行动的结果和注册行为。

It's purpose is to facilitate View or PartialView action results for the Login and Register actions.

    private ActionResult ContextDependentView()
    {
        string actionName = ControllerContext.RouteData.GetRequiredString("action");
        if (Request.QueryString["content"] != null)
        {
            ViewBag.FormAction = "Json" + actionName;
            return PartialView();
        }
        else
        {
            ViewBag.FormAction = actionName;
            return View();
        }
    }

就像MVC其他的事情是按约定完成......这里的约定是，当的Request.QueryString 包含？内容= XXXX ，它prepends的Json的动作名称，填料它ViewBag属性，并返回查看的部分版本。例如：

Like other things in MVC it is done by convention... the convention here is when the Request.QueryString contains a ?content=xxxx, it prepends "Json" to the action name, stuffs it a ViewBag property and returns the partial version of the View. For example:

一个用于 /帐号/登录含量=测试将被解析为 ViewBag.FormAction =JsonLogin的要求; 然后返回部分。

A request for /Account/Login?content=test would be resolved to ViewBag.FormAction = "JsonLogin"; and then return a partial.

一个用于请求 /帐号/登录没有内容的查询字符串因此其形式仍然行动 ViewBag.FormAction =登陆;

A request for /Account/Login has no content query string so its form action remains ViewBag.FormAction = "Login";

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