title: wcf sending linq to sql DataContext
body: <p>Suppose I have a linq to sql class. I want to return the object datacontext throught wcf. I have already made the database unidirectional.I put the WCF works getString() just to demonstrate that the wcf service works if I comment out everything about the ToolboxDataContext.</p>
  
  <pre>
   public interface Database()
  {
     [OperationContract]
     ToolboxDataContext getCtx();
  
     [OperationContract]
     string getString();
  } 
  public class test: Database
          public ToolboxDataContext getCtx()
          {
  
            ToolboxDataContext  ctx = new ToolboxDataContext ();
            return ctx;
          }
   public string  getString()
          {
              return "WCF WORKS";
          }
  
  
  [DataContract]
      public class Testing //my svc file
      {
          [DataMember]
          public ToolboxDataContext ctx;
          [DataMember ]
          public string Id;
      }
  </pre>