/// <summary>
/// Focus on a specific button by providing the corresponding cell.
/// </summary>
private void Select(SudokuCell cell)
{
var button = gamePanel.Controls.Find(cell.ToString(), false).First();
if (button == null)
{
throw new ArgumentException("Cell did not have a matching control.");
}
button.Focus();
}
public SudokuButton(SudokuCell cell)
{
Cell = cell;
Font = new Font(SystemFonts.DefaultFont.FontFamily, 20);
Size = new Size(40, 40);
ForeColor = SystemColors.ControlDarkDark;
Location = new Point(Cell.X * 40, Cell.Y * 40);
FlatStyle = FlatStyle.Flat;
FlatAppearance.BorderColor = Color.Black;
TabStop = false;
Cell.ValueChanged += cell_ValueChanged;
Name = cell.ToString();
}