AsyncOperation( NGCSerializerContext context ) { if (context == null) { } switch (context.Action) { case SerializerAction.endPersistObjectData: { EndPersistObjectData(); XpsSerializationProgressChangedEventArgs e = new XpsSerializationProgressChangedEventArgs(XpsWritingProgressChangeLevel.FixedDocumentSequenceWritingProgress, 0, 0, null); NgcSerializationManager.OnNGCSerializationProgressChanged(e); break; } default: { base.AsyncOperation(context); break; } } }