private void RequestsToolStripMenuItem_Click(object sender, EventArgs e)
        {
            SearchObjectForm sof = new SearchObjectForm(SqlConnection);

            sof.Notation = Notation.ManagerRequests;
            sof.Show();
        }
        private void deleteSMI_Click(object sender, EventArgs e)
        {
            SearchObjectForm sof = new SearchObjectForm(SqlConnection);

            sof.Notation = Notation.Delete;
            sof.ShowDialog();
            RefreshData();
        }