Deserialization of base class

[Chris Szabo]

Good afternoon everyone. I'm running into a problem deserializing a stream
using the XmlSerializer. A stored procedure returns the following from SQL
Server:

<Student StudentId="1" Status="1" Gpa="3.50">
<Person Id="1" FirstName="FirstName0" LastName="LastName0"
MiddleInitial="W"/>
</Student>

In my code, person is the base class and student extends it. When I
instantiate the XmlSerializer I use the following overload: XmlSerializer (
Type, Type [ ] ). The first parameter is the derived type, Student. The
second parameter, the Type [ ] contains the base type, Person.

The student information deserializes correctly into a student object.
However, all of the base properties are not populated. I have tried using
the XmlInclude decoration on the base class, directing it to include Student
as a viable type. That also has not worked. All of the properties in both
classes are public, and if I try to deserialize an instance of Person from
Xml it works perfectly.

Has anyone run into this before? Does anyone know how to get around the
problem short of implementing IXmlSerializable on the derived class?

Thanks everyone.