RadTreeList - only single parent node is displayed

[Oleksii]

Hi,

I am using RadTreeList and have data source with hierarchical data.

Data binding is done in NeedDataSource event handler.

Code example:

<telerik:RadTreeList RenderMode="Lightweight" ID="TreeListTrendsList" runat="server" 
                                ParentDataKeyNames="DIM_LIST_ID_PARENT" DataKeyNames="DIM_LIST_ID" AllowPaging="true"
                                AutoGenerateColumns="false" AllowSorting="true" ExpandCollapseMode="Client" PageSize="150" 
                                OnItemDataBound="TreeListTrendsList_ItemDataBound" OnNeedDataSource="TreeListTrendsList_NeedDataSource">

 

So, the DataKeyNames=DIM_LIST_ID and ParentDataKeyNames=DIM_LIST_ID_PARENT. Data source has ~100 records with DIM_LIST_ID_PARENT=0 and I expected to see them as top level nodes, but for some reason I see only single parent node (with DIM_LIST_ID_PARENT=0, DIM_LIST_ID=1).

Could somebody please suggest how to achieve the required behavior?

 

 

 

 

[Oleksii]

I couple of screenshots related to my question

[Oleksii]

Sorry, some issue when adding attachments