public void KeyDown(KeyEventArgs e) { switch (e.Key) { case Key.Up: MoveEvent.Up(matrix_box); break; case Key.Down: MoveEvent.Down(matrix_box); break; case Key.Left: MoveEvent.Left(matrix_box); break; case Key.Right: MoveEvent.Right(matrix_box); break; default: break; } if (Checker.IsTrue(matrix_box, rows, cols)) { SetGrid.SetDefault(gridPlay); SetGrid.SetImage(gridPlay, image); } }