Silverlight 3 Tier application validation

Question

I am going to develop the 3 tier application using Silverlight + WCF + ORM

Now my question is if I use ORM at database layer then how can I expose the classes at Presentation, Business layer to do Client-Side validation ?

Answer 1

If you used WCF RIA services instead of plain Silverlight WCF, you can attribute the properties of your data objects (in the associated metadata classes RIA creates for you).

This allows you to add basic validation rules, or even custom ones, that runs on both the server and client.

Using WCF RIA Services via a library is the preferred way to organise projects so try this link: Walkthrough: Creating a RIA Services Class Library

Also:

• Using WCF RIA Services
• Creating Rich Business Applications using Silverlight 4 and WCF RIA Services
• Various Channel 9 Videos