This is probably very simple, but Im originally an asp.net programmer, and now I need to make a small windows app.

I have 4 winforms in a project.

On the fifth winform I have a menu where it is possible to select which window I want to show... I have have all four windows open at the same time... but how do I contain them within the "main" form? And how is the best way to write when to show-hide them?

Kind regards
henrik