How do I get Entity Framework 4 and WCF Data Services to work with Silverlight 3.0

Question

I have a project that needs to be upgraded in stages. I need to implement Entity Framework v4 first and then eventually upgrade the Silverlight v3 application to v4.

Unfortunately my client is not able to roll out Silverlight version 4 until for at least four months (they do want to move to v4 but they have to go though a company wide upgrade program).

Anyway, My question is how do I get WCF Data Service to work with Silverlight 3 (as its not able to resolve DataServiceCollection or DataServiceQueryContinuation ?

Or, what suggested workflow should I use to get WCF Data Service / Entity Framework v4 to work with Silverlight 3?

Thanks for your help in advance.

Answer 1

You can either use the version of WCF Data Services which is part of Silverlight 3 with which you won't get data binding support and other perks. But it will work against the newer server just fine (assuming your server won't use any of the new features of course). Or you can download this CTP: http://blogs.msdn.com/b/astoriateam/archive/2010/02/24/ado-net-data-services-for-silverlight-3-update-ctp3-now-available-for-download.aspx It brings the V2 features to SL 3 as well.