title: WCF chunk data with stream
body: <p>HI,
  I neet to pass chunk data from WCF service to client. I have a table with 16 million records, and so, when the client requests data from that table i open a datareader to that table and serialize and send every record to client,here is my method signature..</p>
  
  <pre><code>public AsyncResult FindAsync(AsyncRequest request)
  </code></pre>
  
  <p>where AsyncResult and AsyncRequest are MessageContract, and AsyncResult has a stream in it. the problem is that when a client call the metod my function does not returns untill all data is not writed in stream in server... is it possible to change this behavior or I have to use callbacks?</p>