Solution Explorer: if Page not expanded, open both Page and Code-behind when clicked
In Solution Explorer, if a page is not expanded so that you see [+], then double-clicking the entry should open BOTH the .aspx and the code-behind (cs, vb, etc).
If the page is expanded then the present rules, opening just the object clicked, should continue to apply.
Robert Barnes commented
Oops sorry, I had already suggested this.
This should be a very simple change, easy to develop/test, no subtleties.