//printer of the Sudoku and gridHandler doesn't change in the process of SudokuApp running
public void InitNewAppHandler(DataGridView dataGridView)
{
gridHandler = new GridHandler(dataGridView);
printer = new SudokuPrinter(gridHandler);
}
public SudokuGenerator(GridHandler gh)
{
this.gh = gh;
rnd = new Random();
}
public SudokuPrinter(GridHandler gh)
{
this.gh = gh;
}