I can't execute oracle functions with c#. i'm using oracle 9i version.

Question

i have a problem trying to execute an oracle function with c#.net. The Oracle version i'm using is Oracle 9i.
This is the function definition: (it's defined and working right because i have tryed it with SQLWorksheet)
CREATE OR REPLACE Function NRegistros return integer is
Numero integer(4);
begin
select count(*) into Numero from singles;
return Numero;
END NRegistros;
But with c#.Net i can't acces it because i get an error: "this is not a procedure or is not defined". And i think the code is right. In fact in the same code you can see that i'm using an stored procedure and i have not problems. But with the function i have problems. Is it possible that "OracleClient" can't work with Oracle9i functions??. This is the code:
OracleParameter Parametro = new OracleParameter("Name", OracleType.VarChar,10);
OracleParameter ParametroFuncion = new OracleParameter("Retorno", OracleType.Int32, 4);
Parametro.Direction = ParameterDirection.Output;
ParametroFuncion.Direction = ParameterDirection.ReturnValue;
OracleConnection Conexion = new OracleConnection("Data Source=DISCOS;User Id=SYSTEM;Password=a0000;");
Conexion.Open();
OracleCommand Todos = new OracleCommand();
OracleCommand Procedimiento = new OracleCommand();
OracleCommand Funcion = new OracleCommand();
Todos.Connection = Conexion;
Todos.CommandType = CommandType.Text;
Todos.CommandText="select * from singles";
Procedimiento.Connection = Conexion;
Procedimiento.CommandType = CommandType.StoredProcedure;
Procedimiento.CommandText = "Procedimiento";
Procedimiento.Parameters.Add(Parametro);
Funcion.Connection = Conexion;
Funcion.CommandType = CommandType.StoredProcedure;
Funcion.CommandText = "NRegistros";
OracleDataReader Lector = Todos.ExecuteReader();
BindingSource Discos = new BindingSource();
Discos.DataSource = Lector;
dgvSingles.DataSource = Discos;
Procedimiento.ExecuteNonQuery();
Funcion.ExecuteNonQuery();
lblRegistroProcedimiento.Text = Procedimiento.Parameters["Name"].Value.ToString();
lblNregistros.Text=Funcion.Parameters["Retorno"].Value.ToString();
Conexion.Close();
Edited by: user11921281 on 22-nov-2009 20:32

Answer 1

thank you very much. It was a stupid error, sorry. There was one line left :
OracleParameter Parametro = new OracleParameter("Name", OracleType.VarChar,10);
OracleParameter ParametroFuncion = new OracleParameter("Retorno", OracleType.Int32, 4);
Parametro.Direction = ParameterDirection.Output;
ParametroFuncion.Direction = ParameterDirection.ReturnValue;
OracleConnection Conexion = new OracleConnection("Data Source=DISCOS;User Id=SYSTEM;Password=a0000;");
Conexion.Open();
OracleCommand Todos = new OracleCommand();
OracleCommand Procedimiento = new OracleCommand();
OracleCommand Funcion = new OracleCommand();
Todos.Connection = Conexion;
Todos.CommandType = CommandType.Text;
Todos.CommandText="select * from singles";
Procedimiento.Connection = Conexion;
Procedimiento.CommandType = CommandType.StoredProcedure;
Procedimiento.CommandText = "Procedimiento";
Procedimiento.Parameters.Add(Parametro);
Funcion.Connection = Conexion;
Funcion.CommandType = CommandType.StoredProcedure;
Funcion.CommandText = "NRegistros";
Funcion.Parameters.Add(ParametroFuncion); //<--------------------- That one !!! (yes it was a stupid error jeje)
OracleDataReader Lector = Todos.ExecuteReader();
BindingSource Discos = new BindingSource();
Discos.DataSource = Lector;
dgvSingles.DataSource = Discos;
Procedimiento.ExecuteNonQuery();
Funcion.ExecuteNonQuery();
lblRegistroProcedimiento.Text = Procedimiento.Parameters["Name"].Value.ToString();
lblNregistros.Text=Funcion.Parameters["Retorno"].Value.ToString();
Conexion.Close();