void OnDeleteNote(object sender, EventArgs e)
{
ToolStripMenuItem item = (ToolStripMenuItem)sender;
UndoableUnitOfWorkHelper.Do(string.Format(ITextStrings.ksUndoCommand, item.Text),
string.Format(ITextStrings.ksRedoCommand, item.Text), Cache.ActionHandlerAccessor,
() => DeleteNote(RootBox.Selection));
}