I have a C# project with two forms. All compiles well. When I run the project, all forms are drawn as they are expected to.
A couple of days back, the DesignView of
Another possibility. I had a group of forms all descended from a base form. I added location save/restore code--and everything was coming up blank.
After an hour of messing with it and not being able to find anything wrong it suddenly started throwing a null reference exception in the designer rather than just being blank. Duh--the save/restore code used an object that didn't exist design time.
Why it was silent about it and then suddenly started squawking I have no idea.