Othello game

Hi i'm deeeeeesperate for some help.
I'm trying to make a othello game but i can't get the damn grid to show. The

grid.UpdateBoard(Board.BoardState);

grid.UpdateBoard(Board.BoardState);

is meant to place the grid onto the Othello Game window as shown in the picture. Does someone know what might be wrong and able to help? https://github.com/aljomatrix/Assignment2Repository