How to transfer large amount of data using WCF?

Question

We are currently trying to move large amounts of data to a Silverlight 3 client using WCF with PollingDuplex. I have read about the MultiplerMessagesPerPoll in Silverlight

Answer 1

I implemented the suggested solution above. After implementation, I found this link:

http://msdn.microsoft.com/en-us/library/ms752244.aspx

I then implemented the Binary writer, as shown below.

Service Method:

[OperationContract]
    public Stream GetAllLocationsDataStream(string customerId)
    {
        Stream stream = new MemoryStream();
        try
        {
            Customer customer = ServiceEquipmentManager.GetCustomerAllLocations(customerId);
            DataContractSerializer serializer = new DataContractSerializer(typeof(Customer));
            XmlDictionaryWriter binaryDictionaryWriter = XmlDictionaryWriter.CreateBinaryWriter(stream);
            serializer.WriteObject(binaryDictionaryWriter, customer);
            binaryDictionaryWriter.Flush();
        }
        catch (Exception ex)
        {
            string timestamp;
            ExceptionHelper.HandleExceptionWrapper(ex, "Log Only", out timestamp);
        }

        stream.Position = 0;
        return stream;
    }

Client-side Completed Event:

XmlDictionaryReader binaryDictionaryReader = XmlDictionaryReader.CreateBinaryReader(new MemoryStream(e.Argument as byte[]), XmlDictionaryReaderQuotas.Max);

        Customer customer = serializer.ReadObject(binaryDictionaryReader) as Customer;

I checked the difference of my object as shown in the link above, my results are shown below:

---

Text = 68,866,216 bytes

---

Binary = 49,207,475 bytes (28.5% less than Text)