To be more specific, I'm using a master page and I want to insert rel='canonical' in some pages (for example when I'm using paging in a certain .aspx page).
I need to inject it in the head section of the master page:
This was a step in the right direction: ASP.NET masterpages: how to insert markup in the head section inside the aspx? but I need to have more control, to inject only when I have page=2 in the url.
Thanks