private void btn_AddNewDerpament_Click(object sender, EventArgs e)
        {
            frm_Newdepartment f = new frm_Newdepartment( );

            f.FormClosed += new FormClosedEventHandler(dongformGroup);

            f.ShowDialog( );
        }
        private void btn_Deparment_Click(object sender, EventArgs e)
        {
            frm_Newdepartment f = new frm_Newdepartment( );

            f.ShowDialog( );
        }