Register namespaces and controls for web pages

asp_register_control_page.html

<%@ Register TagPrefix="scott" TagName="footer" Src="Controls/Footer.ascx" %>

asp_register_namespaces_controls.xml

<system.web>
  <pages>
		
    <namespaces>
			<add namespace="System.IO" />
			<add namespace="ProjectName.Classes" />
		</namespaces>
    
		<controls>
			<add assembly="ProjectName" namespace="ProjectName.Controls" TagPrefix="PN" />
			<add tagPrefix="scottgu" src="~/Controls/Header.ascx" tagName="header"/>
		</controls>
	
    
	</pages>
</system.web>