asp.net-mvc ASP.NET MVC 中的 View 和 PartialView 有什么区别？
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What is the difference between a View and a PartialView in ASP.NET MVC?
提问by Ben Aston
What is the difference between a View and a PartialView in ASP.NET MVC?
ASP.NET MVC 中的 View 和 PartialView 有什么区别？
At first glance the need for both seems non-obvious to me.
乍一看，对我来说两者的需求似乎并不明显。
回答by Aaronaught
In theory, the answer is: A partial view is a "sub-view" that you embed within a main view - something that you might reuse across multiple views, like a sidebar.
理论上，答案是： 部分视图是您嵌入到主视图中的“子视图”——您可以在多个视图中重复使用的东西，例如侧边栏。
In practice, the answer is: Very little.
在实践中，答案是： 很少。
In theory, partial views are more lightweight than standard views, but it's perfectly OK to pass a "regular" view to RenderPartialand the performance seems to be exactly the same. I frequently use regular .aspx views as "partial" views because you can make them reference a master view in order to provide templated content like what you can do with UserControls in ASP.NET WebForms. See here.
理论上，部分视图比标准视图更轻量级，但是将“常规”视图传递给它是完全可以的，RenderPartial并且性能似乎完全相同。我经常使用常规的 .aspx 视图作为“部分”视图，因为您可以让它们引用主视图以提供模板化的内容，就像您可以在 ASP.NET WebForms 中使用 UserControls 做的那样。见这里。
Partial views are more like web parts on a portal - they are completely self-contained objects. Use them if the layout is simple and static, or if you're annoyed by the Intellisense errors when you don't have the <html>and <body>tags in a standard View.
部分视图更像是门户上的 Web 部件 - 它们是完全独立的对象。如果布局简单且静态，或者当您在标准视图中没有<html>和<body>标签时对 Intellisense 错误感到恼火，请使用它们。
回答by ThiagoVBDiniz
It works like that:
它是这样工作的：
return View() the view content goes in the @RenderBody() of the /Shared/_Layout.cshtml
return PartialView() it returns only the view content
返回 View() 视图内容进入 /Shared/_Layout.cshtml 的 @RenderBody()
return PartialView() 它只返回视图内容
回答by Tim Hoolihan
Views are the general result of a page that results in a display. It's the highest level container except the masterpage. While a partial view is for a small piece of content that may be reused on different pages, or multiple times in a page.
视图是导致显示的页面的一般结果。它是除 masterpage 之外的最高级别的容器。而局部视图是针对一小段内容，可以在不同的页面上重复使用，或者在一个页面中多次重复使用。
If you're coming from webforms, view is similar to a web content form, while a partial view is like a user control.
如果您来自网络表单，则视图类似于网络内容表单，而部分视图则类似于用户控件。
回答by LiamB
If you come from a webforms background, think of PartialView as a usercontrol.
如果您来自 webforms 背景，请将 PartialView 视为用户控件。
回答by Dariusz
Look at StackOverflow.com site: Main site (View) contains components like:
查看 StackOverflow.com 站点：主站点（视图）包含以下组件：
- Tags
- Related
- Ad
- 标签
- 有关的
- 广告
So Tags, related, Ad etc. can be composed as PartialViews. The advantage of this is that PartialViews can be simply cached by OutputCache instead of recreating all site: performance gain.
所以标签、相关、广告等可以组合为 PartialViews。这样做的好处是 PartialViews 可以简单地由 OutputCache 缓存，而不是重新创建所有站点：性能增益。
回答by Israfel
Consider a partialview like a control in webforms, the idea is the partial is reusable
考虑像 webforms 中的控件一样的局部视图，这个想法是局部是可重用的
