Is it possible to change the main form at runtime?

Question

.NET

A simple example is an authorization form, after which a work form should be launched.
Will I have to use a third form?

Answer 1

You can create as many forms as you want and manipulate as you like. And you can do everything on one. There is such a component as Panel to group components on it and change visibility when necessary.

Answer 2

You can put everything in separate tabs TabControl and hide the TabBar. But why?

Answer 3

I needed this myself. I made the display of any authorization windows in Main() through form.ShowDialog(), and then the real main form through Application.Start(form).