C# reading result from a function

Hi guys, I have a problem with a sipmle function in postgresql. The func()
calculates two integers to a result and returns it. The result is in the DB,
but not in the Console Line in C#. So for example when i have par1 = 2 and
par2 = 5 I get an DB entry with 7 in the result row, but the ConsoleLine is
empty.

What is wrong here?

BEGIN
Result := par1 + par2;
insert into t1 (par1, par2, res) values (par1, par2, Result);
RETURN Result;
END;$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
ALTER FUNCTION test_func(integer, integer)
OWNER TO "Test";

*****************************
c#:
.....

DbParameter giveBack = cmd.CreateParameter();
giveBack.DbType = DbType.Int32;
giveBack.ParameterName = "Result";
giveBack.Direction = ParameterDirection.ReturnValue;
cmd.Parameters.Add(giveBack);

cmd.Parameters["par1"].Value = 2;
cmd.Parameters["par2"].Value = 11;
connection.Open();

if (connection.State == System.Data.ConnectionState.Open) {
Console.WriteLine(cmd.Parameters["par1"].Value);
Int32 result = cmd.ExecuteNonQuery();
Console.WriteLine("Status: {0}: Result: {1}", result,
cmd.Parameters["Result"].Value);
}

Console.WriteLine for par1 returns 2. Console.Writline for Result returns
nothing.

--
View this message in context: http://postgresql.nabble.com/C-reading-result-from-a-function-tp5856560.html
Sent from the PostgreSQL - hackers mailing list archive at Nabble.com.