Solution: Class must implement 'Sub OnDeserialization(sender As Object)' for interface 'System.Runtime.Serialization.IDeserializa

Solution: Class 'CVideoLibraryOrder' must implement 'Sub OnDeserialization(sender As Object)' for interface 'System.Runtime.Serialization.IDeserializationCallback'.

The above error occurs if the IDeserializationCallback.OnDeserialization is not implemented in the class, when the class has a non-serializable member

Sub IDeserializationCallback_Deserialize(ByVal sender As Object) Implements IDeserializationCallback.OnDeserialization

' Calculate the total after Deserialization

VTotal = VPrice * VQty

End Sub

Implements the ISerializable interface and is called back by the deserialization event when deserialization is complete.