XmsValidatingReader: better error message?

[Ron James]

When loading an XmlSchemaCollection with a corrupted .XSD
file I get an XmlSchemaException thrown with a helpful
Message such as "The following text is not allowed in this
context: XXX. An error occurred at File:<filename>
(10,35)" with 10,35 being the row and column of the
offending characters.

However, when using XmlValidatingReader to deserialize a
similarly corrupted .XML file, I get and
InvalidOperationException thrown with the not-so-helpful
message "There is an error in the XML document".

Is there any way I can get a better error message? The
ValidationEventHandler is passed the same primitive error
message. Code follows.

Many thanks

rdr = new XmlValidatingReader( new XmlTextReader( new
StreamReader("DBSchema.xml") ) );
rdr.ValidationType = ValidationType.Schema;
rdr.Schemas.Add(sc); // Schema Collection

// Deserialize and validate the .XML file
myRoot = (RootSchema) mySerializer.Deserialize(rdr);