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2014-01-28

Invalid User Control Reference added by ReSharper?

ReSharper usually offers nice autocomplete suggestions. However when on a WebForm, adding a WebUserControl and then clicking the autocomplete popup suggestion adds an usnusable Register statement. Here’s an example of such a statement:

<%@ Register TagPrefix="PRE" Namespace="My.Namespace" Assembly="My.Namespace" %>
What happens when this is added is that the compiler thinks everything is fine, but when you try to run it the controls inside your user control will be null.
The proper statement should be like this:
<%@ Register TagPrefix="PRE" TagName="MyControl" Src="~/templates/Units/MyControl.ascx" %>
Ref my Stack Overflow question:
http://stackoverflow.com/questions/13305213/aspnet-webforms-server-control-is-null-in-page-load