Wednesday, December 17, 2008

Unrecognized tag prefix or device filter 'asp'. Intellisense stops working!

In VS.NET 2008, when declaring that all ASP.NET web forms use a MasterPage via the web.config file, intellisense might not work. I've found that if I explicitly declare the MasterPageFile property via the form's Page directive, intellisense begins to work again.

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