[Enumeration] DTSXMLSourceType [Description] 
Describes the location of the SourceType, the source type of the XPath string in XPathStringSourceType, and the type of the second operand in SecondOperandType. Depending on what the type is used, the Source, XPathStringSource, and SecondOperand properties must be compatible. For example, if the SourceType is set to FileConnection, then the Source must contain a connection manager. If the SourceType is Variable, then the Source must point to the variable to use.