What is the proper way to get draw area size and screen resolution?

[Alkher]

Certainly related to

Incorrect Screen Resolution in DirectX Windows Project

Hi Guys, I have fixed resolution of my game to 800/600 but somehow when i run the game in release mode window size is 1014/645 and working fine in debug mode. I have used below settings in game constructor: graphics.PreferredBackBufferWidth = 800; graphics.PreferredBackBufferHeight = 600; graphics.ApplyChanges(); Not sure what i am doing wrong. Any insights?

but for now no solution