public void CopyNote(CalendarNote source)
 {
     SourceNote = source;
     if (SourceNote == null)
     {
         return;
     }
     NoteCopied?.Invoke(null, null);
 }
 private void OnMenuItemCopyClick(object sender, EventArgs e)
 {
     NoteCopied?.Invoke(sender, new EventArgs());
 }