Inheritance in the Design Pattern Framework

Hello.

The sample code doesn't come with types that inherit from base types.

So I'm wondering, in the case of DTO's, would adding a "KnownType" attribute for each descendant to the base type be the way to handle this? I've attached a code example. It's probably obvious, but "BaseDevice" is the abstract base, and Camera and Phone are descendants.

Also, what would change in the DataTransferObjectMapper, if anything?

Thanks in advance,

Mike

<DataContract(Name:="BaseDevice"),
    KnownType(GetType(CameraDto)),
    KnownType(GetType(PhoneDto))>
    Public Class BaseDeviceDto
        ''' <summary>
        '''  Internal stock keeping unit code.
        ''' </summary>
        <DataMember()>
        Public SKU As String

        ''' <summary>
        ''' A friendly description.
        ''' </summary>
        <DataMember(Name:="Desc")>
        Public Description As String
    End Class

Michael Lopez, Jun 29, 2012