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  • 0 comments  /  posted by  Silverlight Show  on  Nov 04, 2009 (7 months ago)

    In this post Stephen Forte demonstrates how to use the code from his AsyncLINQManager.

    I have a simple demo application that uses ADO.NET Data Services as a data service back end for a Silverlight application.  My ADO.NET Data Service uses the Entity Framework to map the Northwind database tables of Customers, Orders, and Order Details. Once the Silverlight applications sets a service reference to the ADO.NET Data Service, you can use the client side LINQ libraries to build your application. My application looks like this, it has a drop down filled with customers, a grid with Order and a grid with Order Details. As you click on each one, it will filter the rest.

  • Choosing a Data Access Layer for Silverlight 3

    0 comments  /  posted by  Silverlight Show  on  Sep 30, 2009 (8 months ago)
    In this post Shawn Wildermuth is trying to help you choose which data access to use for Silverlight 3. The three major candidates are Web Services (WCF/ASMX), ADO.NET Data Services and RIA Services. 

    In any situation, any of these will work. But they are suited to different styles and requirements. Here's the abridged differences between the stacks:

    • Web Services: Interface-based Data Access
    • ADO.NET Data Services: LINQ-based Data Access with change management
    • RIA Services: Interface-based Data Access with change management
  • 0 comments  /  posted by  Silverlight Show  on  Sep 29, 2009 (8 months ago)
    Tags: Niagara Project , Validation , ADO.NET Data Services

    Shawn Wildermuth has published the first pass of Niagara's Validation DSL.

    While Niagara is not going to require that you specify your validation attributes using its DSL, there are some benefits I think we can get by loosely coupling the validation. To that end, i've come up with a very first draft of the DSL to define the attributes. I've decided that instead of being very English-like, to mimic the "M" style of language.

  • Introducing Project Niagara

    0 comments  /  posted by  Silverlight Show  on  Sep 29, 2009 (8 months ago)
    Shawn Wildermuth introduces Project Niagara and explains that the goal of the project is to democratize the validation support.

    The project wants to help developers add validation support to ADO.NET Data Services as well as Web Services in Silverlight. In addition, it has the goal of allowing multiple ways to supply the validation metadata to the different data access strategies. As it is my opinion that there are scenarios where attributes are not the best idea.

  • 0 comments  /  posted by  Silverlight Show  on  Sep 10, 2009 (9 months ago)
    In this blog post Shawn Wildermuth introduces ADO.NET Data Services 1.5.

    I've been teaching and using ADO.NET Data Services for a long time and I like showing off exposing a LINQ-based provider (Entity Framework, NHibernate or others) to a Silverlight application. While ADO.NET Data Services does expose its API through a REST API, the magic for me is in its use in Silverlight.

  • Silverlight Data Examples Have Been Updated

    0 comments  /  posted by  Silverlight Show  on  Sep 03, 2009 (9 months ago)
    Tags: Examples , MVVM , Prism , WCF , ADO.NET Data Services
    Shawn Wildermuth has updated the examples in his sister site to include his MVVM, Prism and Declarative UI examples.

    If you've never had the chance to visit my sister site (, now's a good time. I've updated my examples there to include my MVVM, Prism and Declarative UI examples (to go with the skinning/switchable Astoria example).  Take a look if you're doing Silverlight data-based applications.

  • From DB to DataGrid – So Many Choices

    0 comments  /  posted by  Silverlight Show  on  Aug 13, 2009 (10 months ago)
    In the previous entry, Jesse Liberty created the design for the database. Over the next few postings, he’ll be working with that Data. The first article on the subject is now here and it is about extracting and transmitting Data.

    Over the next few postings, we’ll be working with that Data in five distinct ways:

    1. Gather data from the bloggers about themselves, their blog and each entry
    2. Store that data in a database
    3. Extract that data as needed from the database
    4. Transmit the data to a Silverlight application
    5. Display the data in a Silverlight application
  • Securing Web Services (Even with OOB)

    0 comments  /  posted by  Silverlight Show  on  Jul 26, 2009 (10 months ago)
    Shawn Wildermuth has created a simple example of how to protect WCF Services with Forms Auth.

    I was trading tweets today with @pauliom about whether RIA Services would solve some Auth problems he was having out of the browser.  While RIA does do some interesting things with roles/users, I mentioned that typical Forms Auth out of the box should just work.

    To that end I have created a simple example of how to protected WCF Services with Forms Auth (works with ADO.NET Data Services as well BTW).  Because I wanted to support it out of the browser as well, I used the new Forms Auth service. 

  • 1 comments  /  posted by  Alexey Zakharov  on  Jul 23, 2009 (10 months ago)

    1. Introduction

    In my previous article about ADO.NET data services I showed you how to get a full control under the proxy generation process using T4 templates. But to tell you the truth, I don’t like code generation in all of its forms. Today I am going to show you how to use ADO.NET data services without code generation at all.

    Download source code (Requires Silverlight 3 RTM).

  • Business Apps Example for Silverlight 3 RTM and .NET RIA Services July Update: Part 7: ADO.NET Data Services Based Data Store

    0 comments  /  posted by  Silverlight Show  on  Jul 22, 2009 (10 months ago)
    In this section of the series Brad Abrams shows how to get data from a REST based web services rather than directly using Entity Framework or Linq to Sql. You may also be interested in the previous parts of the series.

    Let’s focus on the cloud source of data.  We will use the same sample from the previous parts and change only the data access part to go against ADO.NET Data Services as the data store.

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