internal void DeriveParameters()
{
if (commandType != CommandType.StoredProcedure)
{
throw new InvalidOperationException(String.Format("SybaseCommand DeriveParameters only supports CommandType.StoredProcedure, not CommandType.{0}", commandType));
}
ValidateCommand("DeriveParameters");
SybaseParameterCollection localParameters = new SybaseParameterCollection(this);
localParameters.Add("@P1", SybaseType.NVarChar, commandText.Length).Value = commandText;
string sql = "sp_procedure_params_rowset";
Connection.Tds.ExecProc(sql, localParameters.MetaParameters, 0, true);
SybaseDataReader reader = new SybaseDataReader(this);
parameters.Clear();
object[] dbValues = new object[reader.FieldCount];
while (reader.Read())
{
reader.GetValues(dbValues);
parameters.Add(new SybaseParameter(dbValues));
}
reader.Close();
}
void Close()
{
if (transaction != null && transaction.IsOpen)
{
transaction.Rollback();
}
if (dataReader != null)
{
if (tds != null)
{
tds.SkipToEnd();
}
dataReader = null;
}
if (tds != null && tds.IsConnected)
{
if (pooling && tds.Pooling)
{
if (pool != null)
{
pool.ReleaseConnection(tds);
}
}
else
if (tds != null)
{
tds.Disconnect();
}
}
if (tds != null)
{
tds.TdsErrorMessage -= new TdsInternalErrorMessageEventHandler(ErrorHandler);
tds.TdsInfoMessage -= new TdsInternalInfoMessageEventHandler(MessageHandler);
}
ChangeState(ConnectionState.Closed);
}