Why don't the form and the image on it take up the entire screen?

Question

.NET

The form has a size of 1920x1080 (actually, like the current resolution of my screen where I'm testing).
You need to open a form with an image (PictureBox) full screen on top of all windows and so that there are no icons (Close, minimize, maximize) - as in a full-screen game,
PictureBox made the size 1920x1080 and placed it at coordinates 0; 0

As a result, an empty piece still remains forms on the right, although the picture with a resolution of 1920x1080


I open the form in full screen due to these parameters:

this.WindowState = FormWindowState.Maximized;
this.TopMost = true;  //Поверх всех окон
this.FormBorderStyle = FormBorderStyle.None;  //Убираем интерфейс

Other form parameters:


Parameters of the PictureBox itself with a picture:


Maybe something needs to be changed somewhere? Or is there another way to open the program in full screen?

Answer 1

Problem solved by using the Anchor parameter