Many times, you will want to hide the non-visual controls (like Datasource controls, etc) that show up in your page. It’s very easy to toggle these off and on.
The shortcut is Ctrl-Shift-N, which comes from the View/Visual Aids/ASP.Net Non-Visual Controls menu item. This menu item toggles them off and on, visually.
All Things DotNet Discussed – Winforms/ASP.Net/SharePoint/WPF