Bind ADO.NET object to TreeListView cause sub items refersh problem

[Jane]

Recently, I've been working on a prototype to binding ADO.NET object to RadTreeListView for our project.
I have one DataSet which contains one DataTable. This table has 3 columns: ID, ParentID and Description. Create relation for this table between ID and ParentID columns. In another word, this is a self-referenced table.
Now create one DataView upon this DataTable and add needed filter for it.
1. Use the data set as the DataSource of RadTreeListView
2. Binding data view to ItemSource of RadTreeListView
3. Binding relation to ItemsSource of ChileTableDefinitions
See following codes:
<telerik:RadTreeListView Name="radTreeListView_left" DockPanel.Dock=

"Left" ItemsSource="{Binding TreeVM}" SelectedItem="{Binding SelectedEntityRow}">

 

 

<telerik:RadTreeListView.ChildTableDefinitions>

 

  <telerik:TreeListViewTableDefinition ItemsSource="{Binding Source=DataSetVM, Path=TreeRelation}"/>

 

</telerik:RadTreeListView.ChildTableDefinitions>

 

 

</telerik:RadTreeListView>

 

 

The hierarchy data can be display correctly in TreeListView. Since I am binding the data view to UI with Two Way mode, so I think if I detele one row in data view, the UI will be updated accordingly. But actually, only delete a root item can refresh correctly. Delete sub items on UI cannot refersh, they need additional refersh manually. For example, I have following structure in TreeListView:
Group 1
   |_Item 1
   |_Item2
Group 2
Delete Group2 in DataSet, UI will remove Group 2 automatically. But if I remove Item 2 in DataSet, UI will not update unless I refersh UI manually. 
So my question is does anybody know how to solve this sub items refersh problem? This is very important for us to decide if choose Telerik or not. So please give any clue you may have.

[Vlad]

Hello,

 Can you post more info about the treelist version at your end? 

Kind regards,
Vlad
the Telerik team

[Jane]

I am using version 2011.1.419.35.

[Nedyalko Nikolov]

Hello Jane,

I've tried to reproduce the reported issue, unfortunately to no avail.
Could you please send me your sample project, which I can debug on my side in order to see what is going on?

Regards,
Nedyalko Nikolov
the Telerik team

[Jane]

Thank you for your help.
I have sloved this problem by calling AcceptChanges() on modified datatable. Like below:

TreeVM

 

 

.Table.AcceptChanges();
After calling above sencence when I removed one row in data table, the treelistview UI can remove the corresponding row automatically.

So I guess this shoule be the reason of my problem. I am just curious that why WPF standard control TreeView don't need to add above scence after remove one row in data table, the UI of TreeView can update as well.

[Nagaraj]

Hi Jane,

i am trying to assigning the dataset to the treelistview, but i am getting errors.
can you send me sample code that how you are assigning the dataset to the treelistview..