DevForce Community Forum : System.Data.DuplicateNameException http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce Classic : System.Data.DuplicateNameException Sat, 25 Apr 2026 11:14:06 -700 Fri, 28 Sep 2012 09:26:06 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=3671 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ System.Data.DuplicateNameException : We did fix a few thread safety... http://www.ideablade.com/forum/forum_posts.asp?TID=3671&PID=14656#14656 Author: kimj
Subject: 3671
Posted: 28-Sep-2012 at 9:26am

We did fix a few thread safety problems in the 3.7.3 release last year, but it's not clear those fixes would help here.   The PersistenceManager is not thread safe, by intention, but shared metadata and other structures are. 
 
Are you doing any multi-threading in your application?  Can you tell me anything more about when you see the error?
]]> Fri, 28 Sep 2012 09:26:06 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3671&PID=14656#14656 System.Data.DuplicateNameException : 3.6.8.1 http://www.ideablade.com/forum/forum_posts.asp?TID=3671&PID=14654#14654 Author: chris94530
Subject: 3671
Posted: 28-Sep-2012 at 7:25am

3.6.8.1]]> Fri, 28 Sep 2012 07:25:55 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3671&PID=14654#14654 System.Data.DuplicateNameException : Odd and occasional DataTable... http://www.ideablade.com/forum/forum_posts.asp?TID=3671&PID=14622#14622 Author: kimj
Subject: 3671
Posted: 26-Sep-2012 at 2:38pm

Odd and occasional DataTable or metadata errors usually indicate a multi-threading issue of some sort.  Which DevForce Classic version are you running?
]]> Wed, 26 Sep 2012 14:38:19 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3671&PID=14622#14622 System.Data.DuplicateNameException : I am accessing an ideablade... http://www.ideablade.com/forum/forum_posts.asp?TID=3671&PID=14620#14620 Author: chris94530
Subject: 3671
Posted: 26-Sep-2012 at 1:42pm

I am accessing an ideablade object and occaisionally getting the following error... Any ideas on what could cause this?
System.Data.DuplicateNameException: A DataTable named 'Model:FacilityArea' already belongs to this DataSet.
   at System.Data.DataTableCollection.RegisterName(String name, String tbNamespace)
   at System.Data.DataTableCollection.BaseAdd(DataTable table)
   at System.Data.DataTableCollection.Add(DataTable table)
   at IdeaBlade.Persistence.PersistenceManager.AddTable(EntityTable pEntityTable)
   at IdeaBlade.Persistence.PersistenceManager.CreateTableAndInitialize(Type pEntityType)
   at IdeaBlade.Persistence.PersistenceManager.GetTable(Type pEntityType)
   at IdeaBlade.Persistence.PersistenceManager.ArePrimaryKeyColumns(EntityColumn[] pEntityColumns)
   at IdeaBlade.Persistence.PersistenceManager.XGetRelated(ICollection pEntities, EntityRelationLink pRelationLink, QueryStrategy pQueryStrategy, WorkState pWorkState)
   at IdeaBlade.Persistence.PersistenceManager.GetParent(Entity pEntity, EntityRelation pEntityRelation, QueryStrategy pQueryStrategy)
   at IdeaBlade.Persistence.PersistenceManager.GetParent[T](Entity pEntity, EntityRelation pEntityRelation, QueryStrategy pQueryStrategy)
   at IdeaBlade.Persistence.Entity.GetParent[T](EntityRelation pRelation, QueryStrategy pStrategy)
   at Model.SessionManifestDataRow.GetFacilityAreaImpl()
   at Model.SessionManifestDataRow.get_FacilityArea()
   at Session_Export.mSessionExportForm.mSessionUltraGrid2_BeforeCellActivate_1(Object sender, CancelableCellEventArgs e)
 
The line of code that generates this is...
 

Dim mSessionArea As String = mSession.SessionManifest.FacilityArea.ToString()

 
]]> Wed, 26 Sep 2012 13:42:07 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3671&PID=14620#14620