Lab 08: Using WCF RIA Services
Silverlight provides a flexible framework for working with distributed data retrieved from different types of services but does require developers to understand asynchronous programming and handle callback operations. Applications that allow users to update, insert and delete data also require developers to perform their own client-side object tracking and to write client and server-side code to validate data. While each of these tasks can be addressed with different coding techniques, using a framework that simplifies these types of tasks can lead to greater overall productivity and fewer bugs.
WCF RIA Services provides a distributed data exchange framework that builds upon existing functionality in Windows Communication Foundation (WCF) to allow data to be exchanged between a Silverlight client and a server. It provides developers with a simplified way to work with the asynchronous programming model, track object state within Silverlight applications, share validation code between client and server projects, build client-side proxy objects, plus more.
In this lab you'll create a WCF RIA Services domain service class and call it from a Silverlight application. You'll also learn how data annotations can be applied to metadata classes to validate object properties and share validation logic across client and server. A bonus exercise is also included to show how WCF RIA Services can be used with custom patterns such as the repository pattern. The application that you'll work with in the lab exercises is shown next:
Customer Orders Application
You Will Benefit from this Lab if:
You Will Learn:
Business Requirements for the Silverlight application include:
Estimated Time: 45 minutes