Editing aspx/ascx files randomly disabled in Visual Studio 2010?

Question

I\'ll be debugging a site in Visual Studio 2010 and editing an *.aspx or *.ascx file, and without warning, it will lock up so that I can\'t edit it

Answer 1

I experienced the same issue, and found out that for me it occurred only in .aspx pages with an "eval" statement (used for databinding within e.g. a gridview) within tags. As soon as I removed the "eval" statements, the pages became editable again while debugging.

Example of code causing the page to be readonly while debugging:

'<%# Eval("Text") %>'

Example of replacement code causing the page to be editable again while debugging: