Use TransformRead to access the subcomponent that transforms the source XML document into the data packet that is the value of the Data property. Before you can use TXMLTransformProvider, 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 TransformRead with an OnTranslate event handler. 

XMLDataFile 

TransformWrite 

Data 

TransformationFile 

TransformationDocument 

OnTranslate 

Determining the Source of Data 

Using an XML Document as the Source for a Provider