public static object CreateOriginalValuesObjectWithReferences(this ObjectContext context, object source)
{
object target = context.CreateOriginalValuesObject(source);
EntityKey srcKey = ((IEntityWithKey)source).EntityKey;
IEntityWithRelationships sourceWithRelationships = source as IEntityWithRelationships;
if (sourceWithRelationships == null)
{
return(target);
}
foreach (var relationshipGroup in context.GetRelationshipsByRelatedEnd((IEntityWithKey)target,
EntityState.Unchanged | EntityState.Deleted))
{
IRelatedEnd tgtRelatedEnd = (IRelatedEnd)relationshipGroup.Key;
foreach (ObjectStateEntry srcEntry in relationshipGroup)
{
if (tgtRelatedEnd.IsEntityReference())
{
tgtRelatedEnd.SetEntityKey(srcEntry.OtherEndKey(srcKey));
}
}
}
return(target);
}
