Question

In Visual Studio 2008, while editing the web page, it is displaying some error and I cannot design my page in design view, I can do only in Source code. It is showing the following error in design view…

Master Page Error
‘The Page Contains Markup that is not valid when attached to a master page
Correct the problem in Code View’

Wat is the problem? Whr Should I change ?

Answer 1

Ok, you’ve got a master page and a content page and when you put the two together you get an error.

If the error isn’t obvious you have to work to a point where you can identify what’s caused the error – debugging but of pages rather than code.

1. Create a new page that uses the same master page with no content – does that work? If so then the Master Page is probably not the issue.
2. Now add the elements in your failing page one at a time to your new page – as close as you can manage to cutting and pasting from one to the next but one change at a time. At some point you should see the error arise in the new page – and at that point you should either be able to fix it or will be able to ask a more specific question about why it doesn’t work.

It is the case that designers in VS can just gets themselves tied in knots – but there’s usually an underlying cause.