void ParseXSDDateTime(string xsdDateTime)
  Property Description  
    Argument xsdDateTime valid XML Schema dateTime  
    Description Populates this XmlDateTime with the value specified as a valid XML Schema dateTime.  
    Remarks A valid dateTime is a subset of the ISO 8601 standard comprising [-]CCYY-MM-DDThh:mm:ss[.ff][[Z]|[[+|-]hh:mm]]
where the parts in [...] are optional.
If only the Date part is provided ParseXSDDate should be used, if only the Time part is
provided ParseXSDTime should be used
Throws: LtInvalidValueException thrown on parsing invalid values.
See: ParseXSDDate(string)
See: ParseXSDTime(string)