An SqlParameter With ParameterName '@ID' Is Not Contained By This SqlParameterCollection.

 Stored procedure:1 ALTER PROCEDURE [dbo].[insert_DagVerslag]
2 -- Add the parameters for the stored procedure here
3 @serverID int,
4 @datum datetime,
5 @ID int OUTPUT
6 AS
7 BEGIN
8 -- SET NOCOUNT ON added to prevent extra result sets from
9 -- interfering with SELECT statements.
10 SET NOCOUNT ON;
11 -- Insert statements for procedure here
12 BEGIN TRANSACTION
13 INSERT Log ( serverID, datum)
14 VALUES( @serverID, @datum)
15 COMMIT TRANSACTION
16 SET @ID = @@identity
17 END
18


 

Method who is calling the stored procedure and causes the error1 public void AddDagVerslag(Historiek historiek)
2 {
3 SqlConnection oConn = new SqlConnection(_connectionString);
4 string strSql = "insert_DagVerslag";
5 SqlCommand oCmd = new SqlCommand(strSql, oConn);
6 oCmd.CommandType = CommandType.StoredProcedure;
7 oCmd.Parameters.Add(new SqlParameter("@serverID", SqlDbType.Int)).Value = historiek.ServerID;
8 oCmd.Parameters.Add(new SqlParameter("@datum", SqlDbType.DateTime)).Value = historiek.Datum;
9 oCmd.Parameters.Add(new SqlParameter("@ID", SqlDbType.Int));
10
11 oCmd.Parameters["@ID"].Direction = ParameterDirection.Output;
12
13 try
14 {
15 oConn.Open();
16 int rowsAffected = oCmd.ExecuteNonQuery();
17 if (rowsAffected == 0) throw new ApplicationException("Fout toevoegen historiek");
18 oCmd.Parameters.Clear();
19 historiek.HistoriekID = System.Convert.ToInt32(oCmd.Parameters["@ID"].Value);
20
21 foreach (HistoriekDetail hDetail in historiek.LstHistoriekDetails)
22 {
23 AddDagVerslagCategorie(historiek.HistoriekID, hDetail);
24 }
25 }
26 catch (Exception ex)
27 {
28 throw new ApplicationException("Fout toevoegen historiek : " + ex.Message);
29 }
30 finally
31 {
32 if (oConn.State == ConnectionState.Open) oConn.Close();
33 }
34 }


 

Whats going wrong, i've added the ID parameter my ParameterCollection... so why cant it be found