CSVReader - a simple open source C# class library to read CSV data

CSV Reader
http://www.stellman-greene.com/CSVReader/

Using WCF RIA Services with your POCO

http://thecloudarchitect.com/post/Using-WCF-RIA-Services-with-your-POCO-Part-1-Creating-a-WCF-RIA-Service-Library.aspx

Implementing simple file upload using Silverlight 4 Drag & Drop

http://blogs.infragistics.com/blogs/anton_staykov/archive/2010/04/28/implementing-simple-file-upload-using-silverlight-4-drag-amp-drop-feature-and-infragistics-compression-library.aspx

Silverlight 4 Linq to Sql and RIA sevice for CRUD operations

http://www.c-sharpcorner.com/UploadFile/nipuntomar/958/Default.aspx

Coup d'Oeil sur RIA Services

http://www.scip.be/index.php?Page=ArticlesNET30

MSDN Magazine: Data Access

http://msdn.microsoft.com/fr-fr/magazine/cc159270.aspx