Entity Send to Server Problem - silverlight-4.0

Question

On the client-side I add all related entities (navigation properties) to my main entity and attach it to the list and call SubmitChange. But on the server-side, all related entities are missing!
Code:
Client:
DomainService1 domainService1= new DomainService1();
.
.
.
WorkCode newWorkCode = new WorkCode();
newWorkCode.Date = DateTime.Now;
.
.
.
for(Work item in WorkList)
{
newWorkCode.Works.Add(item)
}
.
.
.
domainService1.WorkCodes.Attach(newWorkCode);
domainService1.InsertWorkCode(newWorkCode);
dsMaintenance.SubmitChanges(submitOperation =>
{
if (!submitOperation.HasError)
{
}
},
null);
Server:
[Update(UsingCustomMethod = true)]
public void InsertWorkCode(WorkCode workCode)
{
//////// workCode.Works = 0 ///////////////////
this.ObjectContext.WorkCodes.AddObject(workCode);
}

Answer 1

I'm not sure what you are doing here. But if I want to add stuff I do it like this and it works:
Context = new DomainContext();
var customer = new Customer() { /* ... */ };
var order = new Order() { Customer = customer, /* ... */ };
Context.Customers.Add(customer);
Context.Orders.Add(order);
If you like the other approach though, you can do that too like this:
var customer = new Customer() { /* ... */ };
var order = new Order { /* ... */ };
customer.Orders.Add(order);
Context.Customers.Add(customer);
Now you just submit:
var submitOperation = Context.SubmitChanges();
submitOperation.Completed += // [...]
Hope this helps.