SAP Connector with ASP.NET

requirement
NCo3016_Net20_x86.msi
add reference ( C:\Program Files (x86)\SAP\SAP_DotNetConnector3_Net20_x86 )
sapnco.dll, sapnco_utils.dll

source code for c# with asp.net
DataSet ds = new DataSet("T_DATA");
try
{
    RfcDestination rfcDestination = null;
    IDestinationConfiguration destinationConfig = null;
    string destinationName = "SAP.LogonControl.1";

    destinationConfig = new SAPDestinationConfig();
    destinationConfig.GetParameters(destinationName);
    if (RfcDestinationManager.TryGetDestination(destinationName) == null)
    {
        RfcDestinationManager.RegisterDestinationConfiguration(destinationConfig);

        rfcDestination = RfcDestinationManager.GetDestination(destinationName);
        if (rfcDestination != null)
        {
            rfcDestination.Ping();
        }

        RfcRepository rfcRepository = rfcDestination.Repository;
        IRfcFunction rfcFunction = rfcRepository.CreateFunction("Z_XXXXX_ORDER");
        rfcFunction.SetValue("I_AXXXX", sWO);
        rfcFunction.Invoke(rfcDestination);

        ds.Tables.Add(ConvertToDotNetTable(rfcFunction.GetTable("T_DATA")));

        RfcDestinationManager.UnregisterDestinationConfiguration(destinationConfig);
    }
}
catch (Exception ex)
{
    throw new Exception(ex.Message);
}

return ds;