Is there a reason why a base class decorated with XmlInclude would still throw a type unknown exception when serialized?

by

The issue you are seeing is because the PaymentSummaryRequest is setting the Namespace. You can either remove the Namespace or add a Namespace to the PaymentSummary class:

[XmlRoot(Namespace = Constants.Namespace)]
[XmlInclude(typeof(xxxPaymentSummary))]
public abstract class PaymentSummary
{
}

As @Tedford mentions in his comment below the namespace is only required when using derived types.

It looks like when generating the XML Serialization assembly that since the Root node has a namespace set and the base class does not it is not including the XML Include logic in the generated serialization assembly.

Another approach to solving the issue would be to remove the namespace declarations from the classes themselves and specify the namespace on the XmlSerializer constructor:

var serializer = new XmlSerializer(
    typeof(PaymentSummaryRequest), 
    Constants.Namespace
);

More Related Contents:

  1. Why XML-Serializable class need a parameterless constructor
  2. How do you serialize a string as CDATA using XmlSerializer?
  3. Omitting all xsi and xsd namespaces when serializing an object in .NET?
  4. ShouldSerialize*() vs *Specified Conditional Serialization Pattern
  5. Can I make XmlSerializer ignore the namespace on deserialization?
  6. Why are properties without a setter not serialized
  7. Xml serialization – Hide null values
  8. Serialize Property as Xml Attribute in Element
  9. .net XML Serialization – Storing Reference instead of Object Copy
  10. How do you find out when you’ve been loaded via XML Serialization?
  11. Force XmlSerializer to serialize DateTime as ‘YYYY-MM-DD hh:mm:ss’
  12. Why isn’t my public property serialized by the XmlSerializer?
  13. How to add XmlInclude attribute dynamically
  14. How to decode string to XML string in C#
  15. When a class is inherited from List, XmlSerializer doesn’t serialize other attributes
  16. How can I make the xmlserializer only serialize plain xml?
  17. How to XML-serialize a dictionary
  18. How to write a comment to an XML file when using the XmlSerializer?
  19. XmlSerialize a custom collection with an Attribute
  20. What are the differences between the XmlSerializer and BinaryFormatter
  21. Checking if an object is a number in C#
  22. Generating XML file using XSD file
  23. Checking if an object is a number
  24. Ignore a property during xml serialization but not during deserialization
  25. XmlSerializer Performance Issue when Specifying XmlRootAttribute
  26. Using XmlSerializer with an array in the root element
  27. Slow SoapHttpClientProtocol constructor
  28. How do you use XMLSerialize for Enum typed properties in c#?
  29. How can I convert a DataTable to an XML file in C#?
  30. XmlSerializer property converter

Leave a Comment