ASP.NET Core MVC View Components

Question

In ASP.NET Core MVC (formerly MVC 6) there is a new area of functionality called View Components which appear to be a better alternative to Partial Views. I've seen the following View Component Example. But there doesn't seem much more information currently as to their usage.

I'm trying to evaluate if its worth using this pattern and if this can/(or is intended) to be used as a more baked in method to help with donut caching.

tugberk · Accepted Answer · 2014-11-18 15:07:22Z

10

View components are definitively great and it's certainly an improvement. The one big improvement is that you can run asynchronous operations on view components where it wasn't possible with child actions.

More information available here:

Exciting Things About ASP.NET vNext Series: MVC View Components

For donut caching, there are two separate issues filed that you can comment/track: #1232 and #536

answered Nov 18, 2014 at 15:07

tugberk

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4 Comments

Tim Over a year ago

thanks I've read your article it's really helpful. But I was wondering more if there was a little more technical direction from Microsoft. Suspect its as its only just become beta.

tugberk Over a year ago

@Tim I am not sure what exactly you are looking as everything is there :) what do you exactly mean by technical direction?

dmcquiggin Over a year ago

I take the point about async operations, but, you can also do that with @await Html.PartialAsync("PartialName"). Do ViewComponents offer any additional benefits over a async partial..? I am genuinely interested to know..

Paul Knopf Over a year ago

@McQuiggd, you can have business logic in the rendering of a ViewComponents. Partials require and already built model.

Lukasz Mk · Accepted Answer · 2017-01-08 11:10:15Z

1

Currently there is available a brand new documentation from Microsoft:

View Components documentation.

In my opinion ViewComponents are very useful and flexible features. I like them, and I can recommend them.

However not always View Component is "a better alternative to Partial Views" - this will depend on your particular case.

answered Jan 8, 2017 at 11:10

Lukasz Mk

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