How do i force VS.net in designer mode on a class?

Question

Short backstory: My UI code uses tabs heavly and as time progresses and features get added the .cs file that has the tab controls is getting big and hard to maintain and i came up with a what i think is a clever way around this. When i create tab page its new class that are inheriting the TabPage, and therefor in its own .cs file.

Now the problem: The new classes are working out great, but Visual Studio does not enter "Design mode" on the new class files it instead shows me editor without the ability to resize and change the UI elements. Does anyone know of a way to force VS.net to go into design mode? ( VS 2k8 )

Link to screenshot of VS.net incase i did not explain it so others explain

The new TabPages are created like this?

class AoCFolder : TabPage

Answer 1

Right click on the file and select "Open With" - then choose the editor you want to use. You can also set the defaults in the same dialog.