Registering all templates in folder /_controltempaltes/custom

Question

I have a question regarding the directives in the MasterPage. So if I deploy a custom template to ControlTemplates in SharePoint folder, to use it I will need to write a directive which imports that control. It is clear, but the question is:

How can I import all my custom templates from a folder controltempaltes?

I tried:

<%@ Register TagPrefix="src" src="~/_controltemplates/CUSTOMTemplates" %>
<%@ Register TagPrefix="src" src="~/_controltemplates/CUSTOMTemplates/*" %>

Without success ...

Answer 1

You can't. The syntax for @ Register with a user control is:

<%@ Register tagprefix="tagprefix"
   tagname="tagname"
   src="pathname" %>

Where

src

The location (relative or absolute) of the declarative ASP.NET User Controls file to associate with the tagprefix:tagname pair.

tagname

An arbitrary alias to associate with a class. This attribute is only used for user controls.

tagprefix

An arbitrary alias that provides a shorthand reference to the namespace of the markup being used in the file that contains the directive.

Note the singular file.

Answer 2

As far as I know you have to add each control template separately. Another option would be to write code which iterates through all your custom control templates and add them programmatically, wrapping this code in one control template.