Tip
Alternatively you can add the namespaces globally in Web.config under <system.web>/<pages>/<controls> tag to avoid adding namespaces in your pages every time:
XML
<system.web> <pages> <controls> <add tagPrefix="GleamTech" namespace="GleamTech.FileUltimate.AspNet.UI" assembly="GleamTech.FileUltimate" /> <add tagPrefix="GleamTech" namespace="GleamTech.FileUltimate.AspNet.WebForms" assembly="GleamTech.FileUltimate" /> </controls> </pages> </system.web>