WCF data object receive progress

Question

I'm looking for a way to retrieve a collection of DTOs from my WCF data service in a way that will allow me to be informed every time a whole DTO from the collection has finished downloading, also I want to be able to read it of course.

Means, if I want to get a collection of users, every time a user from the collection is downloaded completely to the client (serializably-speaking), I want the client-side to be notified and be able to read it.

Is it at all possible?

Thanks!

Edit: Is passing a callback from the client to the server, which the server will use to send the client each user through iteration, a possible/correct direction? Or is there a better solution?

Answer 1

You’ll probably have to split it into multiple requests in order to do this. For example, one request to retrieve the size of the collection, and then a separate request for each item in the collection. Then you know when each item completes. (If you do this, you can even parallelise the whole thing.)