>I have a problem with a form which is based on a class: When I make changes in the class, the form doesn't reflect the changes.

It should work like you expect, what do you change in the class? A method? If so, you can't see the method code int he form regardless. A property? If the property on the form is not default, it will not be updated when the class value is updated. Are you changing a class then running an EXE hoping the form is updated? You have to rebuild the EXE each time in this case, or simply run the main of the EXE instead of the EXE.