Linq to SQL Silverlight 4 WCF services

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LINQ

I have successfully set up services for my Silverlight application using Linq to SQL. I just don't know how to correctly configure the service. I need to be able to display query results in the data grid. I am trying to access the stored procedure.

Documentation would help greatly.

This is the IService code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;

// NOTE: You can use the "Rename" command on the "Refactor" menu to change the interface name "IService" in both code and config file together.
[ServiceContract]
public interface IService
{
  [OperationContract]
  List<contract> GetContract(string Contract);
}</contract>

I don't know how to structure the Services.cs file- I keep getting errors.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;

public class Service : IService
{
    public void DoWork()
    {
    }
}