private void CopyGrid(frm_Sudoku_TE trialSudoku)
{
// Enter the grid as we know it
for (int j = 0; j < this.dgv_Sudoku.Rows.Count; j++)
{
for (int i = 0; i < this.dgv_Sudoku.Columns.Count; i++)
{
trialSudoku.dgv_Sudoku[i, j].Value = this.dgv_Sudoku[i, j].Value;
}
}
}
private bool TrialAndError()
{
this.dgv_Sudoku.Refresh();
// Create a new instance of the Form2 class
frm_Sudoku_TE trialSudoku = new frm_Sudoku_TE();
// Show the form
trialSudoku.Show();
trialSudoku.Left = this.Left + this.Width + 100;
trialSudoku.Top = this.Top;
// I couldn't get this done in design view of the other form for some reason
trialSudoku.dgv_Sudoku.Enabled = false;
string cellValue = "";
// Find an unknown entry in this grid
for (int j = 0; j < this.dgv_Sudoku.Rows.Count; j++)
{
for (int i = 0; i < this.dgv_Sudoku.Columns.Count; i++)
{
// Store the cell value
cellValue = this.dgv_Sudoku[i, j].Value.ToString();
// Check we have an unknown
if (cellValue.Length > 1)
{
// Loop through each character in the string
for (int x = 0; x < cellValue.Length; x++)
{
// Copy the grid into the new form
CopyGrid(trialSudoku);
// Store character (i.e. potential value for the cell)
string cellChar = cellValue.Substring(x, 1);
// Assume possible value is correct value
trialSudoku.dgv_Sudoku[i, j].Value = cellChar;
trialSudoku.dgv_Sudoku[i, j].Style.ApplyStyle(styleTest);
// Try and solve
trialSudoku.codeRunning = true;
trialSudoku.SolveGrid();
trialSudoku.codeRunning = false;
// Check if the grid is complete
bool checkGrid = trialSudoku.CheckGrid();
ShowReviewMessage_Trial(i, j, cellValue, cellChar, checkGrid);
if (checkGrid)
{
return(true);
}
}
}
}
}
return(false);
}