public void ClearValue(int x, int y)
{
// Clear the specified value
_digits[x, y].ClearValue();
// Create a new board to apply all the exclusions properly (vs. attempting to undo them)
var board = new Board(this);
// Take over the new board's digits
_digits = board._digits;
}
public static Board FromString(string basis)
{
// Create a new board from an 81-character string that specifies the board's values left-to-right, top-to-bottom
var board = new Board();
int i = 0;
for (var y = 0; y < Size; y++)
{
for (var x = 0; x < Size; x++)
{
if (' ' != basis[i])
{
board.SetValue(x, y, basis[i] - '0', Digit.Kind.Given);
}
i++;
}
}
return board;
}
private void Initialize(Board basis)
{
// Initialize each digit
_digits = new Digit[Size, Size];
for (var y = 0; y < Size; y++)
{
for (var x = 0; x < Size; x++)
{
_digits[x, y] = new Digit();
}
}
if (null != basis)
{
// Copy the digits of the specified board
for (var y = 0; y < Size; y++)
{
for (var x = 0; x < Size; x++)
{
var digit = basis.GetDigit(x, y);
if (digit.ValueKnown)
{
SetValue(x, y, digit.KnownValue, digit.DigitKind);
}
}
}
}
}
public Board(Board basis)
{
// Copy specified board
Initialize(basis);
}
private void UpdateDisplay(Board board)
{
// Update the value and candidate numbers according to the specified board
for (var y = 0; y < Board.Size; y++)
{
for (var x = 0; x < Board.Size; x++)
{
var digit = board.GetDigit(x, y);
_values[x, y].Text = (digit.ValueKnown ? digit.KnownValue.ToString() : " ");
for (var z = 0; z < 9; z++)
{
_candidates[x, y, z].Text = (digit.ValueKnown ? " " : (digit.CouldBe(z + 1) ? (z + 1).ToString() : " "));
}
}
}
// Incorporate the specified board and layout
_board = board;
Layout();
}
