DevForce Community Forum : Async Navigation in SL causes modified entities http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : Async Navigation in SL causes modified entities Sat, 11 Apr 2026 17:57:08 -700 Wed, 20 Oct 2010 02:06:41 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2223 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ Async Navigation in SL causes modified entities : Confirmedthis issue is fixed in... http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8846#8846 Author: pompomJuice
Subject: 2223
Posted: 20-Oct-2010 at 2:06am

Confirmed this issue is fixed in 6.06.


]]> Wed, 20 Oct 2010 02:06:41 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8846#8846 Async Navigation in SL causes modified entities : That is good news. Thanks! http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8778#8778 Author: pompomJuice
Subject: 2223
Posted: 13-Oct-2010 at 7:08am

That is good news. Thanks!]]> Wed, 13 Oct 2010 07:08:53 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8778#8778 Async Navigation in SL causes modified entities : pompomJuice - we've fixed... http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8777#8777 Author: kimj
Subject: 2223
Posted: 13-Oct-2010 at 6:56am

pompomJuice - we've fixed this bug in the 6.0.6 release.   This release is due out within a week, and an EAP build is available now upon request.]]> Wed, 13 Oct 2010 06:56:28 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8777#8777 Async Navigation in SL causes modified entities : That is not... http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8776#8776 Author: pompomJuice
Subject: 2223
Posted: 13-Oct-2010 at 12:51am

That is not going to produce the error. You are not accessing anything asynchronously in that test.

The kind of navigation I am talking about is the same as what would happen between the Product.SupplierID relationship.

Try something like this:

                mgr.ExecuteQueryAsync(mgr.Products).Completed+=(s,e)=>
                {
                    e.Results.ToList().ForEach( p =>
                        {
                            p.Supplier.EntityAspect.PendingEntityResolved+=(sender,args)=>
                                {
                                    if (p.EntityAspect.EntityState == EntityState.Unchanged)
                                    {
                                        MessageBox.Show("EntityState is Unchanged as expected");
                                    }
                                    else
                                    {
                                        MessageBox.Show("Something is wrong. EntityState is " + p.EntityAspect.EntityState.ToString());
                                    }
                                };
                        });
                };

The call to r.Supplier triggers devforce to fetch the supplier asynchronously, while handing a fake one to you. So far so good. Once the async  fetch is complete however, the fake value is supposed to get a PropertyChangedEvent. Instead no event seems to occur and r.Supplier is marked as modified. Disaster!


Edited by pompomJuice - 13-Oct-2010 at 1:01am]]> Wed, 13 Oct 2010 00:51:20 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8776#8776 Async Navigation in SL causes modified entities : Hi, How are you acesssing... http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8769#8769 Author: sbelini
Subject: 2223
Posted: 12-Oct-2010 at 1:15pm

Hi,

 
How are you acesssing the navigation properties?
I wrote a small test (below) and the nav properties are Unchanged.
 
Can you provide a test case (preferably against NorthwindIB) reproducing the issue?
 
 
var employeesQuery = mgr.Employees.Include("Orders");
mgr.ExecuteQueryAsync(
  employeesQuery,
    args => {
      if (args.HasError) {
        throw args.Error;
      }
      var orders = args.Results.First().Orders;
      var numberOfOrders = orders.Count();
      Random randNum = new Random();
      var index = randNum.Next(numberOfOrders - 1);
      var anOrder = orders[index];
      if (anOrder.EntityAspect.EntityState == EntityState.Unchanged) {
        MessageBox.Show("EntityState is Unchanged as expected");
      } else {
        MessageBox.Show("Something is wrong. EntityState is " + anOrder.EntityAspect.EntityState.ToString());
      }
    },
    null);
]]> Tue, 12 Oct 2010 13:15:17 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8769#8769 Async Navigation in SL causes modified entities : Hi.Whenever I access Navigational... http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8764#8764 Author: pompomJuice
Subject: 2223
Posted: 12-Oct-2010 at 8:54am

Hi.

Whenever I access Navigational properties of entities in Silverlight asynchronously, my entities get marked as "Modified" by devforce. This is causing severe confusion in my UI.

Any idea when this might be fixed?

W
]]> Tue, 12 Oct 2010 08:54:28 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2223&PID=8764#8764