Hello everybody,

I bind my ASPxTreeList with ObjectDataSource, just right after I bind it the control turn into label showing:

"error rendering control, An unhandled exception has occured. Duplicate key node." Do you know why? Is it because I have two composite recursive primary keys in a table ?

thank you.

Hi,

In bound mode this exception occurs when there are duplicate data values in a field specified via the KeyFieldName property.

I have hierarchical data, up to 4 levels. You can imagine it like employee with 4 level manager above him, each manager has manager respectively. I still can not use ASPxTreeList with this kind of data. So do you have a solution ?

Thank you.

The ASPxTreeList supports hierarchical data sources.

Please refer to the following online demo:
http://demos.devexpress.com/ASPxTreeListDemos/Data/Hierarchical.aspx

If my keyfieldname's and parentfieldname's data type is Text, then ASPxTreeList will generate "Error Rendering Control - ASPxTreeList1- An unhandled exception has occurred. Duplicate node key".

Is there any idea ?

Please help me. Thank you.

Did you resolve this issue? I am tring to use VirtualModeCreateChildren &  VirtualModeNodeCreating Events. I am getting "Duplicate Node Key"  Message and not able to expand Treeview Nodes.

Thank You.