C#

foreach (DataRow row in JoinedDataSet.Tables["Loan"].Rows)
       {

           WireEntryLoan newEntryLoan = new WireEntryLoan();

           newEntryLoan.custName = row["MtgeeLoanName"].ToString();
           newEntryLoan.loanWLSID = row["LoanNumber"].ToString();

PROCEDURE pGetHashes ( iFrom IN NUMBER, iTo IN NUMBER, sHash1 OUT CHAR, sHash2 OUT CHAR );

int iFrom = 0;
int iTo = 1000;
using (IDbCommand command = dbConnection.CreateCommand())
{
    OracleCommand orclCommand = command as OracleCommand;
    orclCommand.CommandText = "pGetHashes";
    orclCommand.CommandType = CommandType.StoredProcedure;

    orclCommand.Parameters.Clear();
    orclCommand.Parameters.Add("iFrom", OracleDbType.Int32, iFrom, ParameterDirection.Input);
    orclCommand.Parameters.Add("iTo", OracleDbType.Int32, iTo, ParameterDirection.Input);

    OracleParameter orclParam = new OracleParameter("sHash1", OracleDbType.Char, 100);
    orclParam.Direction = ParameterDirection.Output;
    orclCommand.Parameters.Add(orclParam);
    orclParam = new OracleParameter("sHash2", OracleDbType.Char, 100);
    orclParam.Direction = ParameterDirection.Output;
    orclCommand.Parameters.Add(orclParam);

    orclCommand.BindByName = true;

    orclCommand.ExecuteNonQuery();

    // after this the orclCommand.Parameters["sHash1"].Value is always null.
    // the orclCommand.Parameters["sHash2"].Value has the correct value.
}

SET SERVEROUTPUT ON;
DECLARE 
sHash1 CHAR(67);
sHash2 CHAR(67);
nFrom NUMBER := 0;
nTo NUMBER := 1000;
BEGIN

pGetHashes( nFrom, nTo, sHash1, sHash2 );

dbms_output.put_line('Hash1: '|| sHash1);
dbms_output.put_line('Hash2: '|| sHash2);
END;