Stored procedure - ref cursor - no rows

Question

Hello,
I am stumped. Hopefully another pair of eyes will see what mine cannot. I am calling a stored procedure that accepts a single output parameter [the proc has been dumbed down to limit variables of my problem] that is a ref cursor. When I make the call I get now data. I have used both adapter and datareaders. If I call the proc from another proc I can loop through the results. I am including the code of my c# function and the stored proc.
The version number of my Oracle.DataAccess.dll is 10.1.0.303.
** Stored Proc ***********************
TYPE refcursor is ref cursor ;
procedure P_CUSTOMER_INFO_GET_SLIM( thecur out refcursor )
is
begin
open thecur for
select *
from customer_info
where rownum < 21;
end P_CUSTOMER_INFO_GET_SLIM;
** C# Func ***************************
          private DataSet _FetchCustomerData2(string CustNbr, string ShipToSuffix)
               string                         sc = "PKG_CUSTOMER_CONTACT.P_CUSTOMER_INFO_GET_SLIM";
               OracleConnection     con = new OracleConnection(_Database.GetConnection().ConnectionString);
               OracleCommand               cmd = new OracleCommand(sc, con);
               OracleDataAdapter da = new OracleDataAdapter(cmd);
               DataSet ds = new DataSet();
               // must pass strings with data
               if (CustNbr.Length==0 || ShipToSuffix.Length==0)
                    return null;
               try
                    // we are calling a stored proc so set it
                    cmd.CommandType = CommandType.StoredProcedure;
                    cmd.Parameters.Add("thecur", OracleDbType.RefCursor, DBNull.Value, ParameterDirection.Output);
                    da.Fill(ds, "Customer"); // no data ?????????????????
                    // Close and Dispose OracleConnection object
                    con.Close();
                    con.Dispose();
                    return ds;

Answer 1

Hey all,
I ended up declaring a variable in the proc as refcursor and opening it. Then I assigned the out parameter ref cursor to the variable. That took care of it. See below.
Thanks,
Mike
procedure P_CUSTOMER_INFO_GET(
CustomerNumber in varchar2
,ShipToSuffix in varchar2
,thecur out refcursor
is
-- variable declarations
mycur refcursor;
begin
open mycur for
select CORP_CODE
,CUST_NUMBER
,CUST_SHIP_TO_SFFX
,CUST_BILL_TO_SUFF
,CUST_AR_OFF_CODE
,CUST_NAME
,CUST_SHIP_BILL_IND
,CUST_SHIP_VIA_CODE
,CUST_CLASS_CODE
,CUST_TYPE_CODE
,CUST_PRICE_CODE
,DISC_MKUP_CODE
,TRADE_DISC_CODE
,CUST_N_D_ACCT_NO
,CUST_PRY_PRICE_AGR
,CUST_ADDR_1
,CUST_ADDR_2
,CUST_ADDR_3
,CUST_CITY
,CUST_STATE
,CUST_ZIP
,CUST_COUNTRY_CODE
,CUST_FAX_NO
,CUST_FAX_NO_EXP
,CUST_PHONE_NO
,CUST_PHONE_NO_EXP
,CUST_CRDT_LIM_CODE
,CUST_CREDIT_STATUS
,CUST_CRED_CARD_NO
,CUST_CC_EXP_DATE
,CUST_DUNNING_FLAG
,CUST_ID
,CUST_SP_FILE_IND
,CUST_ST_TAX_CODE
,LAST_MAINT_DATE
from customer_info
where CUST_NUMBER = CustomerNumber
and CUST_SHIP_TO_SFFX = ShipToSuffix;
-- send the cursor back
thecur := mycur;