Make WCF Data Services DataServiceContext save only actual changes

Question

I am binding a DataServiceCollection to Silverlight controls using PagedCollectionView. It seems that a record is marked as edited if the User simply sets the focus in and out of certain controls like DatePicker. How can this behavior be intercepted/overridden so only actual changes are sent back to the server for saving?

Answer 1

Its in the Reference.cs file thats autogenerated when you add the Service Reference. Look at any of the setters and you'll see that the value is pushed straight in without a check like

set 
{
  if (this._field == value) return;
  //raise the changing events - not shown
  this._field = value;
  //raise the changed events - not shown
}

I wish they'd change it.