public static object Convert( 
   object anonObject
)

private void RunProjectionQuery() {
   // Run a query (asynchronously) which returns an anonymous type.
   // Assume we've already connected and logged in.
   
   DomainModelEntityManager mgr = DomainModelEntityManager.DefaultManager;

   var query = mgr.Customers
               .Select(c => new { c.CustomerID, c.CompanyName });
   mgr.ExecuteQueryAsync(query, FetchCompleted, "F1");
 }

 private void FetchCompleted(EntityFetchedEventArgs args) {
   // Special logic to handle a projection query - 
   //  you can't bind to an anonymous type in Silverlight.

   // If an anonymous type is returned from a query, convert
   // it to a DevForce dynamic type to enable binding.
   // The Convert method returns an IEnumerable, which you
   // can use to directly set a DataGrid ItemsSource property.
   if (AnonymousFns.IsAnonymousType(args.Query.ReturnType)) {
     _dataGrid.ItemsSource = DynamicTypeConverter.Convert(args.Result);
   } else {
     _dataGrid.ItemsSource = args.Result;
   }

   // Binding to anonymous types isn't supported in Silverlight because the anonymous
   // type is not a public type.  The converted 'dynamic type' is public.  We can see this
   // here:
   bool isPublic1 = args.Query.ReturnType.IsPublic;
   bool isPublic2 = DynamicTypeConverter.Convert(args.Result).AsQueryable().ElementType.IsPublic;
}