Trouble displaying data with TreeView

[Joe Riley]

Hoping someone can direct me down the correct path.  Trying to have a Treeview control on a page where users can use the checkbox feature on the fields they would like queried out of the database. 

This is what I have: Category (6 categories)
Group Desc (to many to list)
Friendly Column Name (to many to list)

See attached image of the data that I return from SQL.

I would like
    Category
        Group Desc
            Friendly Name (datatextfield = QualifiedName)

When attempting to get it working I get several different errors.  Currently the error is

These columns don't currently have unique values.

<telerik:radtreeview id="RadTreeView1" runat="server" checkboxes="True" datafieldid="Category"
            datafieldparentid="GroupDescr" datasourceid="SqlDataSource1" datatextfield="FriendlyName" DataValueField="QualifiedName"></telerik:radtreeview>

[Shinu]

Hello Joe,


You are getting this error because a unique identifier must be assigned to the DataFieldID of Treeview. In your case the DataFieldID is 'Category' which is not a unique field in your database. For more information on this please refer the following documentation.
Binding to Hierarchical Data

Hope this information helps,
-Shinu.

[Joe Riley]

Shinu,

Thank you for your response it does help out greatly.

Thanks,
Joe