How can I run code in a C# class definition each time any instance of the class is deserialized?
I am trying to derive a class from ObservableCollection and I need to run just a single line of code each and every time any instance of this class is deserialized. My thought was to do this:
[Serializable]
public class ObservableCollection2<T> : ObservableCollection<T>, ISerializable
{
public ObservableCollection2()
: base()
{ }
public ObservableCollection2(SerializationInfo info, StreamingC开发者_开发百科ontext context)
: base(info, context)
{
// Put additional code here.
}
void ISerializable.GetObjectData(SerializationInfo info, StreamingContext context)
{
base.GetObjectData(info, context);
}
}
But I don't have access to those base methods related to serialization. Am I forced to re-write all of the serialization manually?
You can use the OnDeserializedAttribute
: "When applied to a method, specifies that the method is called immediately after deserialization of the object." Note that the method also needs to accept a StreamingContext
parameter:
[Serializable]
public class ObservableCollection2<T>: ObservableCollection<T>
{
[OnDeserialized()]
internal void OnDeserializedMethod(StreamingContext context)
{
this.DateDeserialized = DateTime.Now;
}
}
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