Use of OracleHelper

Question

Hi,
How can I use the ExecuteScalar method when calling a stored procedure that has a return value (function) in a ASP.Net application?
Thanks in advance.

Answer 1

OracleConnection dbconn = new OracleConnection("my connection");
OracleCommand cmd = new OracleCommand("function_name",dbconn);
cmd.CommandType = CommandType.StoredProcedure;
OracleParameter p_retval = new OracleParameter();
p_retval.OracleDbType = OracleDbType.Varchar2;
// the next line is crucial when using a function
p_retval.Direction = ParameterDirection.ReturnValue;
cmd.Parameters.Add(p_retval);
dbconn.Open();
cmd.ExecuteScalar();
string str = p_retval.Value.ToString();