void dbWriterCharge(int row)
        {
            for (int i = 1; i < row; i++)
            {
                List <object> charge = new List <object>();
                charge.Add(a[i].col_1);
                charge.Add(a[i].col_22);
                charge.Add(a[i].col_23);
                charge.Add(a[i].col_24);
                charge.Add(a[i].col_30);
                charge.Add(a[i].col_36);
                charge.Add(a[i].col_38);
                charge.Add(a[i].col_25);
                charge.Add(a[i].col_32);
                charge.Add(a[i].col_26);
                charge.Add(a[i].col_33);
                charge.Add(a[i].col_27);
                charge.Add(a[i].col_34);
                charge.Add(a[i].col_28);
                charge.Add(a[i].col_35);
                charge.Add(a[i].col_29);
                charge.Add(a[i].col_31);
                charge.Add(a[i].col_37);

                //adatbázisba íratás
                db.chargeWriteFromExcel(charge);
            }
        }