I have a DAL function that needs to call a stored procedure and get the dataset, along with a couple of OUT parameters. I can get the resulting dataset but not sure how to get the parameters.
Normally, the parameters are available through cmd.Parameters["ParamName"].Value but I am using another API to make the DB connection and return the resulting dataset, not sure how to get the OUT parameters in addition to dataset.
Here is what i have, so far:
Public static int getSomething(string inParam, out DataTable dtOut, out string outParam1, out string outParam2)
{
OracleDbCntext dbContext = new OracleDbContext();
DataSet dsOut = new DataSet()
DataTable dtOut = new dataTable();
....
try
{
List<OracleParameter> spParams = new List<OracleParameter>();
spParams.Add(new OracleParameter("INPARAM", OracleDbType.Varchar2, receptacleID, ParameterDirection.Input));
spParams.Add(new OracleParameter("OUTARAM1", OracleDbType.TimeStamp, null, ParameterDirection.Output));
spParams.Add(new OracleParameter("OUTARAM2", OracleDbType.TimeStamp, null, ParameterDirection.Output));
spParams.Add(new OracleParameter("CUR_OUT", OracleDbType.RefCursor, ParameterDirection.Output));
try
{
dbContext.Open();
dbContext.ExecuteStoredProcedure("SOME_PKG.USP_SOMESP", spParams, ref dsOutcome);
}
catch (Exception oConnException)
{
}
if (dsOut != null)
{
if (dsOut.Tables[0].Rows.Count > 0)
{
dtOut = dsOut.Tables[0];
//outParam1 = ????
//outParam2 = ????
}
}
}
}
namespace Something.Model.DataAccess
{
public class OracleDbContext
{
public OracleConnection DbConnection { get; private set; }
public OracleDbContext()
{
string ConnectionString = ConfigurationManager.ConnectionStrings["DefaultConnectionString"].ConnectionString;
DbConnection = new OracleConnection(ConnectionString);
}
public void Open()
{
if (DbConnection.State != ConnectionState.Open)
{
DbConnection.Close();
DbConnection.Open();
}
}
public void Close()
{
if (DbConnection.State == ConnectionState.Open || DbConnection.State == ConnectionState.Broken)
{
DbConnection.Close();
DbConnection.Dispose();
}
}
public void ExecuteStoredProcedure(string spName, List<OracleParameter> spParams, ref DataSet dataset)
{
OracleDataAdapter da = null;
OracleTransaction oraTransaction = null;
using (OracleCommand command = new OracleCommand())
{
command.CommandType = CommandType.StoredProcedure;
command.Parameters.AddRange(spParams.ToArray<OracleParameter>());
command.Connection = DbConnection;
command.CommandText = spName;
try
{
oraTransaction = DbConnection.BeginTransaction();
da = new OracleDataAdapter(command);
da.Fill(dataset);
oraTransaction.Commit();
}
catch (Exception e)
{
oraTransaction.Rollback();
}
finally
{
if (oraTransaction != null)
oraTransaction.Dispose();
if (DbConnection != null)
{
this.Close();
}
}
}
}
Stored Procedure in SOME_PKG:
PROCEDURE USP_SOMESP
(
INPARAM VARCHAR2,
OUTPARAM1 OUT TIMESTAMP,
OUTPARAM2 OUT TIMESTAMP,
CUR_OUT OUT GETDATACURSOR
)
....
LVSQUERY:='SELECT FIELD1, '''|| V_EVENTCODE ||''' AS EVENTCODE, ...
WHERE SOMETHING= '''|| V_LOC1||''' ';
OPEN CUR_OUT FOR LVSQUERY;
EXCEPTION WHEN OTHERS THEN
...;
END USP_SOMESP;
As you have a layer in the middle you might need to change your code a little bit.
Change this
spParams.Add(new OracleParameter("OUTARAM1", OracleDbType.TimeStamp, null, ParameterDirection.Output));
with
var outParam1 = new OracleParameter("OUTARAM1", OracleDbType.TimeStamp, null, ParameterDirection.Output);
spParams.Add(outParam1);
And then use the Value property:
outParam1.Value;
According to the documentation:
For output parameters the value is:
Set on completion of the OracleCommand (true for return value parameters also).
Set to the data from the database, to the data type specified in OracleDbType or DbType.