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Friday, July 17, 2009

Business Apps Example for Silverlight 3 RTM and .NET RIA Services July Update: Part 8: WCF Based Data Source

by BradA via Brad Abrams on 7/17/2009 11:09:00 PM

More updates on my Mix09 talk “building business applications with Silverlight 3”. You can watch the original  video of the full session The demo requires (all 100% free and always free): VS2008 SP1 (Which includes Sql Express 2008) Silverlight 3 RTM .NET RIA Services July '09 Preview Also, download the full demo files… In the original demo I showed getting your data from a database directly from the web tier.  Many enterprise customers have found that it their systems are more mai ...

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System.Data.Linq.Binary is not XmlSerializable

by Rick Strahl via Rick Strahl's Web Log on 7/17/2009 6:30:53 AM

So I ran into an annoying problem today with an entity that has a timestamp. When imported LINQ to SQL will create a Binary type for this the timestamp and as it turns out this type does not serialize via XML. This means ASMX Web services fail as well as plain old XmlSerializer style serialization. You’ll get: System.Data.Linq.Binary cannot be serialized because it does not have a parameterless constructor. Uh, how can you build a new type for a data component that doesn’t serialize natively? ...

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Business Apps Example for Silverlight 3 RTM and .NET RIA Services July Update: Part 6: Data Transfer Objects (DTOs)

by BradA via Brad Abrams on 7/17/2009 4:10:00 AM

I have gotten some great questions on my series so far…   A couple of readers noted that it was not always a good idea to return DAL types back to the client.  For example, in Part 2, I returned the SuperEmployee type defined by Entity Framework.    For example, if you change your backed from EF to NHibernate to their might be some effect of that in the client projection.    I can also more easily control exactly how the entity looks to the client.&n ...

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