C# Inhieriting DataContract Derived Types
- by dsjohnston
I've given a fair read through msdn:datacontracts and I cannot find a out why the following does not work. So what is wrong here? Why isn't ExtendedCanadianAddress recognized by the datacontract serializer?
Type 'XYZ.ExtendedCanadianAddress' with data contract name 'CanadianAddress:http://tempuri.org/Common/Types' is not expected.
Add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer.
Given:
namespace ABC
{
[KnownType(typeof(Address))]
public abstract class Z
{
//stuff
//method that adds all types() in namespace to self
}
[KnownType(typeof(CanadianAddress))]
[DataContact(Name = "Address", Namespace = "http://tempuri.org/Types")]
public class Address : Z
{}
[DataContract(Name = "CanadianAddress", Namespace = "http://tempuri.org/Types")]
public class CanadianAddress : Address
{}
}
namespace XYZ
{
[KnownType(typeof(ExtendedCanadianAddress))
[DataContact(Name = "Address", Namespace = "http://tempuri.org/Types")]
public class ExtendedAddress : Address
{
//this serializes just fine
}
[DataContact(Name = "CanadianAddress", Namespace = "http://tempuri.org/Types")]
public class ExtendedCanadianAddress : CanadianAddress
{
//will NOT serialize
}
}
