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Gabor Barbaro
900
Databound Tree Bug
posted
there is a bug in UltraWinTree.TreeNodesCollection.InitializeBindingManager().
It works only in the RootNodesCollection of a tree, not in the sub levels of a recursive DataBinding. (I'm using NetAdvantages 12.2)
 
Take following data class:
 
public class TaskItem
{
   public string Name { get; set; }
   public List<TaskItem> Subs { get; set; }
}
 
Set ShowExpansionIndicator to Allways in the tree.
Bind the tree to following data struct of TaskItems:
 
Root1
Root2
   Sub1
   Sub2
Root3
 
Run the application.
Make a breakpoint in UltraWinTree.TreeNodesCollection.VerifyBoundNodes().
Expand Root2.
 
internal void VerifyBoundNodes()
{ 
      ...         
      this.InitializeDataList();
      if ( null == this.dataSource )
      {
         this.InitializeBindingManager();
      }
      this.PopulateBoundNodes();
}
 
InitializeDataList() gets the SubNodesCollection of Root2, it is correct.
InitializeBindingManager() sets the DataBinding to datasource=RootNodesCollection, datamember=”Subs”. It is false.
PopulateBoundNodes() ignores DataBinding and shows the SubNodesCollection, that is why users do not see the Bug.
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  • 53790
    posted

    Hello Jabor,

    Thanks for provided information. I research our source code with mentioned classes, but at a fisrt look everything seems to be correct. The last changes in that part of our code  are from 2008. Could you please provide us more details about your issue. Also if you are able please send us small sample with exact steps to reproduce it. Please explain what is your expectation.

    Thanks in advance !

    Regards

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