I believe that you should be able to cast the sender object to a ITransferHandlerContext instead and access the TransferHandlers from there in the same way that you are currently doing it.

Let us know how you get on!

Henrik

Disclaimer: This suggestion was cooked up without actually trying anything out and it therefore possible that it might fail miserably.

mm .. good point I'm stuck with similar issue. I got to the point to hook up to "IDataExportEvents.Starting" event of using:

    public class DataExporterContextEventArgs : EventArgs
    {
        public DataExporterContextEventArgs(IDataExporter dataExporter, ITransferHandlerContext context);

        public IDataExporter DataExporter { get; }
        public ITransferHandlerContext TransferHandlerContext { get; }
    }

I used "DataExporter" as before. Works for me but haven't try with Tags!

Aria

As Henrik is suggesting you should be able to get the DDS trnafer handler from context. Something like:

var ddsHandler = transferHandlerContext.TransferHandlers.OfType<IDynamicDataTransfer>().FirstOrDefault();