SYSK 332: How To Register Custom Controls Once For All Web Pages
Did you know that since .NET 2.0 you can define register directives in the <pages> element in your configuration instead of using @Register directive on every page? It’s especially useful if you’re using a custom control(s) in multiple web pages. Here is an example of registering controls from MyControlLibrary assembly and controls from the web project itself:
<pages>
<controls>
<add namespace="WebSite1" tagPrefix="lc" />
<add namespace="MyControls" tagPrefix="cc" assembly="MyControlLibrary"/>
</controls>
</pages>