private void btnCheck_Click(object sender, RoutedEventArgs e)
{
if (Puzzle == null)
{
return;
}
var solved = true;
foreach (PuzzleLetter item in Puzzle.TheGrid.Children)
{
solved = item.CheckLetter() && solved;
}
if (solved)
{
var pop = new Winner();
pop.ShowDialog();
}
else
{
Puzzle.TheGrid.Background = new SolidColorBrush(Colors.Red);
}
}