private void _btnShowHistory_Click(object sender, RoutedEventArgs e)
        {
            frmHistoryView frmHistory = new frmHistoryView(((SchedulerView)_combo.SelectedValue).Name);

            frmHistory.Show();
        }
        private void _btnShowHistory_Click(object sender, RoutedEventArgs e)
        {
            frmHistoryView frmHistory = new frmHistoryView();

            frmHistory.Show();
        }
        private void MenuItem_Click(object sender, RoutedEventArgs e)
        {
            frmHistoryView f = new frmHistoryView(((SchedulerView)_combo.SelectedValue).Name);

            f.Show();
        }
        private void MenuItem_Click(object sender, RoutedEventArgs e)
        {
            frmHistoryView f = new frmHistoryView();

            f.Show();
        }