Visual Studio 2005

Re: Unrecognized tag prefix or device filter 'asp'

PizzaSlice — Tue, 12 Jun 2007 20:24:33 GMT

Changing web.config and saving fixed it for me as well. Thanks guys!

Re: Unrecognized tag prefix or device filter 'asp'

Mikhail Arkhipov (MSFT) — Thu, 15 Mar 2007 04:09:32 GMT

Please read carefully Ajax RTM release information. You must remove old assemblies from bin as RTM version installs in GAC, not in bin. You also need to fix web.config.

http://ajax.asp.net/documentation/Migration_Guide_CTP_to_RTM.aspx

http://ajax.asp.net/documentation/Migration_Guide_RC_to_RTM.aspx

http://ajax.asp.net/documentation/AspNet_AJAX_CTP_to_RTM_Whitepaper.aspx

Re: Unrecognized tag prefix or device filter 'asp'

dean.carrefour — Wed, 14 Mar 2007 16:43:31 GMT

plq1:

This bug is still occurring in vs 2005 service pack 1.

In my case opening master pages didnt help. But opening web.config and making a whitespace change to it, then clean solution and rebuild, did make the problem go away. None of my master pages are present in web.config, in fact I've never made a change to web.config

What is 'clean solution'? I'm having this same problem, even with my master page and web.config files open. I just upgraded my AJAX and Toolkit to the release versions. I didn't have any errors/warnings on the previous versions.

Re: Unrecognized tag prefix or device filter 'asp'

plq1 — Sun, 14 Jan 2007 09:26:02 GMT

This bug is still occurring in vs 2005 service pack 1.

In my case opening master pages didnt help. But opening web.config and making a whitespace change to it, then clean solution and rebuild, did make the problem go away. None of my master pages are present in web.config, in fact I've never made a change to web.config

Re: Unrecognized tag prefix or device filter 'asp'

iamhrh — Wed, 21 Dec 2005 20:02:21 GMT

Wow, this is a bizzare one. Same situation, using master pages, and when I try and edit a file without the master page open, visual studio pronounces that all of my <asp: tags are invalid :-/

Oh well, a workaround is a workaround I suppose.

Thanks again ASP.Net forums / google

Re: Unrecognized tag prefix or device filter 'asp'

James Newton-King — Sat, 10 Dec 2005 02:24:15 GMT

Thanks Mikhail, keeping the master page open fixes it. Interesting bug.

Re: Unrecognized tag prefix or device filter 'asp'

Mikhail Arkhipov (MSFT) — Fri, 09 Dec 2005 22:49:06 GMT

Sounds like this bug. I believe the workaround is to keep the master page open. Let me know if that works.

Re: Unrecognized tag prefix or device filter 'asp'

JustJump — Fri, 09 Dec 2005 18:50:37 GMT

I had a similiar issue. Mine occured on content pages where I had not defined the master page at the top. I was setting my master page in the web.config and didn't want it on each page. I wonder if there is a way to make those errors go away. The site still runs though.

~ Lisa

Unrecognized tag prefix or device filter 'asp'

James Newton-King — Fri, 09 Dec 2005 10:08:07 GMT

I'm getting this error: "Unrecognized tag prefix or device filter 'asp'" in the ASP.NET source view of VS 2005.

It only seems to occour on some pages, and on those pages it does occour, <asp:Content> tags seem to be uneffected.

Does anyone know what is going on?