DevForce Community Forum : Null Reference Exception http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : Null Reference Exception Mon, 13 Apr 2026 11:15:11 -700 Mon, 13 Jun 2011 18:03:40 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2763 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ Null Reference Exception : Never mind, I got this resolved.... http://www.ideablade.com/forum/forum_posts.asp?TID=2763&PID=10972#10972 Author: gregweb
Subject: 2763
Posted: 13-Jun-2011 at 6:03pm

Never mind, I got this resolved.  It seems that it was not properly added to a EntityManager.  After call EntityManager.AddEntity(), it no longer gave this error.
 
Greg
]]> Mon, 13 Jun 2011 18:03:40 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2763&PID=10972#10972 Null Reference Exception : I am getting a null reference... http://www.ideablade.com/forum/forum_posts.asp?TID=2763&PID=10970#10970 Author: gregweb
Subject: 2763
Posted: 13-Jun-2011 at 5:00pm

I am getting a null reference exception, but I can't figure out what is going on.  The below is the stack trace.  In the Debug Windows, it shows that the Property "LastSynchronized" is being set.    The below line is what is shown in the Debug Windows, from the IB.Designer.cs file.  But neither "this" nor "Value" is null.
 

set { PropertyMetadata.LastSynchronized.SetValue(this, value); }

at IdeaBlade.EntityModel.EntityWrapper.SetValueWithChangeNotification(DataEntityProperty property, Object newValue)
   at IdeaBlade.EntityModel.EntityWrapper.IdeaBlade.EntityModel.IStructuralObject.SetValueWithChangeNotification(DataEntityProperty property, Object newValue)
   at IdeaBlade.EntityModel.DataEntityProperty`2.SetValueWithVerification(TInstance instance, TValue newValue)
   at IdeaBlade.EntityModel.DataEntityProperty`2.<.ctor>b__4(DataEntityPropertySetInterceptorArgs`2 args)
   at IdeaBlade.Core.PropertyInterceptor`3.HandleAction(Action`1 action, TArgs args)
   at IdeaBlade.Core.PropertyInterceptor`3.<BuildTargetedCombinedAction>b__3(TArgs args)
   at IdeaBlade.Core.PropertyInterceptor`3.ExecuteActions(TArgs args)
   at IdeaBlade.Core.PropertyInterceptor`3.SetValue(TInstance instance, Object context, TValue value)
   at IdeaBlade.Core.PropertyInterceptor`3.SetValue(TInstance instance, TValue value)
   at IdeaBlade.EntityModel.DataEntityProperty`2.SetValue(TInstance instance, TValue value)
   at Jet.Models.EmailFolderEntity.set_LastSynchronized(Nullable`1 value)
   at Jet.Views.EmailViewModel.RefreshFolder_Completed(Object sender, InvokeServerMethodEventArgs e)
   at IdeaBlade.EntityModel.BaseOperation`2.OnCompleted()
   at IdeaBlade.EntityModel.BaseOperation`2.IdeaBlade.EntityModel.IHasAsyncEventArgs.OnCompleted()
   at IdeaBlade.EntityModel.AsyncProcessor`1.<>c__DisplayClass2.<.ctor>b__0(TArgs args)
   at IdeaBlade.EntityModel.AsyncProcessor`1.Signal()
   at IdeaBlade.EntityModel.AsyncProcessor`1.<Execute>b__5(Object x)]]> Mon, 13 Jun 2011 17:00:31 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2763&PID=10970#10970