[v2010]:
Backspace and arrow keys stop working in editor:
To fix:
Press ctrl + tab
For more information see here.
Windows 7: How to fix vs2010 toolbox issues :
Sometimes the Visual Studio 2010 toolbox cache can get a bit corrupted. Controls that you once were able to drag onto a form no longer seem alive, or you may start seeing double, triple and quadruple entries for the same controls.
To resolve your toolbox issues without having to uninstall or reinstall, you can try deleting your toolbox cache.
Steps:
Delete: \Users\<user>\AppData\Local\Microsoft\VisualStudio\10.0\*.tbd
Note: these files/folder may be hidden, so to display hidden files in Windows, see here.
For more information, see here.
[v2012]:
