JohnSoftware 0 Newbie Poster

I'm creating a game, the game is designed on 2d array of 12x12
The game is a remake of the 1984 pengi.
I'm having trouble creating the array making the array fit the screen size. in the attachment in the Game1.cs I have initialized the 2d array of blocks randomly however i want to hard code them so that i can check if a cell is empty for collisions etc

how do i do this?
thanks for your help