private void button1_Click(object sender, EventArgs e)
        {
            string god = comboBox3.SelectedItem.ToString();
            string mesi = "9";
            string pattern = @"[0-9]";
            string text = comboBox5.SelectedItem.ToString();
            Regex newReg = new Regex(pattern);
            MatchCollection matches = newReg.Matches(text);
            foreach (Match mat in matches)
            {
                dTable2 = new System.Data.DataTable();
                load(String.Format(query2, mat, m, mesi, god), dTable2, TableName);
                ds.Tables.Add(dTable2);
            }
        }

comboBox5.DisplayMember = "predp1";
                comboBox5.DataSource = ds.Tables["FIN_SEL_VD_ENTERPRISE"];