HOTSPOT
You have an existing order processing system that accepts .xml files,
The following code shows an example of a properly formatted order in XML:
You create the following class that will be serialized:
For each of the following properties, select Yes if the property is serialized according to the defined
schem
a) Otherwise, select No.
Answer: 
correct
what’s wrong with Orderdate ?
Ok got it. Since this is using a DataContractserializer , instead of an xmlserializer , the members with DataMember are only going to be added to the XML file.