Use TransformWrite to access the subcomponent that transforms a data packet back into the format required by the source XML document. When a client calls the ApplyUpdates method, the delta packet is merged into the transformed data from the XML document, and then TransformWrite converts the resulting dataset into the format of the source XML document. 

Before you can use TXMLTransformProvider to apply updates, you must specify the transformation that this subcomponent uses by setting its TransformationFile or TransformationDocument property. In addition, if the transformation includes any user-defined nodes, you must supply TransformWrite with an OnTranslate event handler. 

ApplyUpdates 

TransformRead 

TransformationFile 

TransformationDocument 

OnTranslate 

Using an XML Document as the Source for a Provider