Find all asp.net usercontrols that are not being used / referenced

Question

I have a project with hundreds of usercontrols but many of them are old and no longer used. Is there are quick way to find out which ones can be deleted?

Answer 1

I don't know of any VS function/tool that can do this but you can look for the following ways they are imported:

• Through the Page.LoadControl call
• The @Register page directive
• The controls section of the web.config

If you knock together a script to run through all of your codebehinds, .aspx files and web.config files, you would be able to build up a list of all controls in use. Then delete the unused ones.