How to determine when the user control is fully loaded and shown?

Question

There were already a few similar questions on stackoverflow, but I haven\'t found the answer

I have an application that consists of several tab pages. On one of them

Answer 1

Take a look at my solution offered to another. They had a very similar issue. Wait until EVERYTHING finished its loading before doing a certain action, but not every time a form necessarily became "activated" or "shown". It involves attaching to the Load handler of your outermost control of interest. In your case, the tabbed page, but the example solution I provided was at the FORM level.