[SOLVED] Is it possible to load another Form into the game window?

I want to load a Form with the controls (buttons, textbox …) to prevent the code from being too long.
It’s possible?

If by ‘too long’ you mean writing your own ui library is a lot of work, then, you can try this (just by searching a little with the button existing for this)

I tink i get it:

Cadastro form = new Cadastro();

form.TopLevel = false; //