private void RefreshBoard()
{
Cursor.Current = Cursors.WaitCursor;
try
{
UndoRedoManager.Instance.Clear();
SudokuSolutionNode selected_node = solutionsTree.SelectedSolutionNode;
SudokuSolution selected_sol = solutionsCheckedListBox.SelectedSolution;
foreach (TreeNode node in solutionsTree.Nodes)
{
SudokuSolutionNode sol_node = solutionsTree.TreeNodeToSolutionNode(node);
if (sol_node.State == SudokuSolutionNodeState.Solution)
{
sol_node.Parent.RemoveNodes(sol_node);
}
}
SudokuSolutionNode last = solutionsTree.TreeNodeToSolutionNode(solutionsTree.Nodes.Cast <TreeNode>().Last());
last.RemoveNodes();
SudokuSolutionNode root = SudokuSolutionNode.CreateTree(solutionsTree.SelectedSolutionNode.Root);
solutionsTree.UpdateTree(root, solutionsTree.SelectedSolutionNode);
}
finally
{
Cursor.Current = Cursors.Default;
}
}
