private void cmdOK_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                var note = PNStatic.Notes.Note(_ID);
                if (note != null)
                {
                    switch (_Mode)
                    {
                    case ExchangeLists.Tags:
                        note.Tags.Clear();
                        foreach (var n in lstCurrent.Items.OfType <KeyValuePair <string, TextBlock> >())
                        {
                            note.Tags.Add(n.Value.Text);
                        }
                        PNNotesOperations.SaveNoteTags(note);
                        note.RaiseTagsChangedEvent();
                        break;

                    case ExchangeLists.LinkedNotes:
                        note.LinkedNotes.Clear();
                        foreach (var n in lstCurrent.Items.OfType <KeyValuePair <string, TextBlock> >())
                        {
                            note.LinkedNotes.Add((string)n.Value.Tag);
                        }
                        PNNotesOperations.SaveLinkedNotes(note);
                        break;
                    }
                }
                DialogResult = true;
            }
            catch (Exception ex)
            {
                PNStatic.LogException(ex);
            }
        }