.Net RIA Services Part 3: DataForm and Validation This is the forth part in a series of posts about building applications with Microsoft .Net RIA Services and Silverlight 3 . In part 1 of this series I created a new application, created a simple data model and used the Domain Service and Domain Context to retrieve data and bind it to a DataGrid . In part 2 we replaced the manual work needed to get the data from the server with the DomainDataSource that provided some more advanced scenarios such as...