How do I set the size of the visible area of a form, minus heading and borders?

Question

I would like to set my form to be exactly 300*300 excluding heading and borders.

If I use Size property, it does include these values.

Is there any way how t

Answer 1

Why not just factor in the size of the border and the title bar?

int BorderWidth = (this.Width – this.ClientSize.Width) /2;
int TitlebarHeight = this.Height – this.ClientSize.Height – 2 * BorderWidth;

I found the formulas here.