how can I export a FeatureDataset by IGdbXmlExport without Featureclass?

[liTao]

just like the title:

i want to export a FeautreDataset to a XML File using the IGdbXmlExport .

but the Featureclass unload this FeautreDataset  are all exported ,

is there anyway to remove the Featureclass in the export list?

[liTao]

just like this form :
see the attachment.