Visual Studio 2008 design view for ASP.NET

I can not switch to design view in ASP.NET :(

Error message :-

The page contains markup that is not valid when attached to a master page.

开发者_开发百科

Any idea?

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Just remove the comments from the ASPX page which inherits the masterpage.

If you are using Visual Studio 2008 then update to Visual Studio 2008 SP1: http://www.microsoft.com/downloads/en/details.aspx?FamilyId=FBEE1648-7106-44A7-9649-6D9F6D58056E&displaylang=en

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http://forums.asp.net/t/1197363.aspx

there is a link with somebody who has the same problem..

It appears that his problem was a "refreshing" problem.. Maybe this is your case?

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Firstly try to switch to design view for your masterpage. If it succeeds, then without closing your masterpage, open your ASP.NET pages and try to switch to design view.