In the project I'm working on, I was editing a class and when I got done, I clicked save all. I moved on to my main form's designer. When it came up, the custom tab control I have on the form was blank. There used to be a ton of controls in it, so I am extremely confused about where everything went.

I checked the properties window and it thinks everything is still there:



But when I check the Document Outline window, everything is gone. The tab control is still there, "AVERT Wizard", but all of it's child controls and tab pages are gone.



Even the event handlers are still there within the code and the project builds and runs just fine, but the controls are still missing. When I run the project and click a button to change the tab page, an exception isn't thrown. So it seems like VS thinks everything is there, with the exception of Document Outline.

Does anyone have any ideas about how to fix this? I really don't want to have to manually re-do every control. That would be extremely time consuming.