RIA Services in silverlight 4

Hi,

For Creating Ria DomainService ,Please follow the below steps,

Step 1> Suppose Your Silverlight Application Project let say RiaDomainSevices . Now right Click on your Web Project and select "Add New Item", Select "Data" from the Tree Menu on the Left, and then Select "ADO.NET Entity Data Model".Select table data which you want,then build your web project after that select "Add New Item", Select "Web" from the Tree Menu on the Left, and then Select "Domain Service Class".You will get Domain Service which you created.

Here you will get below assemblies by default, Please make those dll Copy Local to true by selecting their property.

using System.ServiceModel.DomainServices.EntityFramework;
using System.ServiceModel.DomainServices.Hosting;
using System.ServiceModel.DomainServices.Server;

 Bulid your Domain service,then add below assemlies reference in your page.xaml.cs.

using System.ServiceModel.DomainServices.Client;
using RiaDomainSevices.Web;

[EnableClientAccess()]
public class EmployeeDomainService : DomainService
{
public List GetEmployees()
{
List employees = new List();

EmployeeDTO employee = new EmployeeDTO();
employee.ID = 1;
employee.FirstName = "Jason";
employee.LastName = "Apergis";
employees.Add(employee);

employee = new EmployeeDTO();
employee.ID = 2;
employee.FirstName = "Ethan";
employee.LastName = "Apergis";
employees.Add(employee);

employees.Add(employee);
return employees;
}
}

for Accessing service from client side, add namespace of web part and then access:
private EmployeeDomainContext _context = null;
public EmployeeViewModel() //constructor of client
{
  _context = new EmployeeDomainContext();
  _context.Load(_context.GetEmployeesQuery());
}
 please see the below links.
http://forums.silverlight.net/forums/p/173862/391495.aspx
http://forums.silverlight.net/forums/p/203848/476896.aspx

For Creating Ria Domain Services.
http://www.adam-thompson.com/category/Silverlight-4.aspx
http://msdn.microsoft.com/en-us/library/ee707376(v=vs.91).aspx

Hope this will help you.

Thanks.