The community is working on translating this tutorial into Yoruba, but it seems that no one has started the translation process for this article yet. If you can help us, then please click "More info".
If you are fluent in Yoruba, then please help us - just point to any untranslated element (highlighted with a yellow left border - remember that images should have their titles translated as well!) inside the article and click the translation button to get started. Or have a look at the current translation status for the Yoruba language.
If you see a translation that you think looks wrong, then please consult the original article to make sure and then use the vote button to let us know about it.
Please help us by translating the following metadata for the article/chapter, if they are not already translated.
If you are not satisfied with the translation of a specific metadata item, you may vote it down - when it reaches a certain negative threshold, it will be removed. Please only submit an altered translation of a metadata item if you have good reasons to do so!
UserControls - Introduction
A UserControl is a separate, reusable part of a page. You can put a piece of a page in a UserControl, and then reuse it from a different location. The name, UserControl, might seem a bit fancy, but actually, it's just like a regular page, with an optional CodeBehind file. A notable difference is that UserControls can be included on multiple pages, while a page can't. UserControls are used much like regular server controls, and they can be added to a page declaratively, just like server controls can.
A big advantage of the UserControl is that it can be cached, using the OutputCache functionality described in a previous chapter, so instead of caching an entire page, you may cache only the UserControl, so that the rest of the page is still re-loaded on each request.
An example where a UserControl could come in handy, is a control for showing information about a certain user on a community website. In the next couple of chapters, we will create a UserControl from scratch, make it fit to our purpose, and then use it on a page.