ASP.NET UserControl Does Not Initialize Child Controls

Question

Inside my page, I have the following:

Answer 1

In my case the reason was the Resharper 7.1 added incorrect @Register directive at the top of aspx - instead of this desired row:

<%@ Register Src="~/Controls/Hello/Hello.ascx" TagName="Hello" TagPrefix="p" %>

i got wrong one:

<%@ Register TagPrefix="p" Namespace="MyNamespace.WebApp.Controls" Assembly="MyApp.Web" %>

Answer 2

Well, I've found the problem(s):

1. User Controls, as opposed to Custom Controls must be registered one-by-one in the web.config file. Do this:

   <add tagPrefix="local" tagName="KeywordSelector" src="~/KeywordSelector.ascx" />

   instead of:

   <add tagPrefix="local" namespace="Keywords" assembly="Keywords" />

2. You should never place a WebControl in the same directory as the Control that is using it. This is downright silly. Read about it here.

Thanks for the help. Now if only I could mark my own answer as the answer...