private void DeleteNotebook(INotebook nb)
{
if (nb.State == NotebookState.New || System.Windows.MessageBox.Show("Are you sure you wish to remove the notebook: '" + nb.Title + "'?", "OP.Notes", MessageBoxButton.YesNo) ==
MessageBoxResult.Yes)
{
nb.BeforeSave -= notebook_BeforeSave;
nb.AfterSave -= notebook_AfterSave;
_notebooks.Remove(nb);
nb.Delete();
var li = lbNotebooks.Items.OfType <ListBoxItem>().First(ti => ((ucNotebook)ti.Tag).Notebook == nb);
var ctrlNb = (ucNotebook)li.Tag;
if (pnlNotebooks.Children.Contains(ctrlNb))
{
pnlNotebooks.Children.Remove(ctrlNb);
}
lbNotebooks.Items.Remove(li);
}
}