Hi all

I have been trawling various forums for days trying to resolve an issue!!

I am building a module which has many UserControls but within VS2010 I am getting the following error:

Element 'ContactsAdd' is not a known Element. This can occur if there is a compilation error in the website or the web.config file is missing.

This line it refers to is:

<uc2:ContactsAdd ID="ContactsAdd1" runat="server" /> 

This seems to be happening on all of my UC's. Any ideas?

Hello,

That error usually means that there is no reference to the user control on the page. In other words, the page where you're using the control doesn't know what uc2:ContactsAdd is because it hasn't been referenced.

Add a line like this to the top of the page to add a reference:

<%@ Register TagPrefix="uc2" TagName="ContactsAdd" Src="MyControls/ContactsAdd.ascx" %> 

Of course, replace "MyControls" with the path to your control.

Note that some controls may not have the same paths in your compilation as they will in the production environment. 

Mike

I have also discovered that I cannot reference the UC's in the CodeBehind! Says they have a protection level issue!!

Maybe that extra information may help