private void Window_Closed(object sender, EventArgs e)
{
if (appearanceDialog != null)
{
appearanceDialog.Close();
appearanceDialog = null;
}
}
private void Toggle_appearance_Click(object sender, RoutedEventArgs e)
{
if (appearanceDialog != null && appearanceDialog.IsVisible)
{
appearanceDialog.Close();
appearanceDialog = null;
}
else
{
appearanceDialog = new AppearanceDialog(this.DataContext)
{
Topmost = true
};
appearanceDialog.Show();
}
}