Hello,
I'm looking for help trying to get the contents of the XML document while in
the ValidationEventHandler for XmlReaderSettings. Here is what I mean:
We need to be able to validate the content of SOAP messages which are coming
into a web service. These XML messages might be missing elements, or have
incorrect values in enums, etc. We found that during the deserialization of
the XML in these messages, if there are missing elements which are ints and
floats, then these elements are added back in by the web service with default
values. Missing enums are added back in with first value in the enum. And
so forth.
This is not good, so we decided to add a SOAP extension to do XML validation
before getting to the web service. We used a WSValidation SOAP Extension
adapted from an article on MSDN.
We were able to get the validation working and are logging the exception
message, etc. We would like to log the XML message itself, but have not been
able to find a way to do so. If a validation error or warning occurs a
ValidationEventHandler is called. There are two parameters passed into the
ValidationEventHandler:
sender (which is an XmlReader or XsdValidationReader, not sure which)
ValidationEventArgs
Neither of these objects appear to give you a link back to the XML message
that contained the invalid element. You would think the "sender" object
would, but it seems to be primarily concerned with reading a tag at a time,
and there is no way, I think, to get the entire XML document out.
Any suggestions on how we can do this? Without serializing the XML message
into a string, putting that into a class-level variable and then getting at
it within the ValidationEventHandler?
Thank you!
Trevor Brierly
