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Hierarchy not showing

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Lucian Chiriac
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Lucian Chiriac asked on 27 May 2008, 09:18 PM
Hello, i have the following problem:
Using the TreeView with a LINQ dataa source (hierarchical), the tree does not load correctly. Everything is shown as a list:

<telerik:RadTreeView ID="t" runat="server" DataSourceID="lnq" DataFieldID="CategoryId" DataFieldParentID="ParentId" DataTextField="Name"> </telerik:RadTreeView>

<asp:LinqDataSource ID="lnq" runat="server" ContextTypeName="BLA.DataContext"

OrderBy="Name" Select="new (CategoryId, Name, ParentId)" TableName="Categories">

</asp:LinqDataSource>


I really don't see what is the problem :(
This is a sample of the data (CategoryId, Name, ParentId)

1,"First node",

NULL

2,"TEST 2222",1

3,"Test 13453",2

4,"zuzud",3

Best regards,
Lucian

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Atanas Korchev
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answered on 28 May 2008, 07:40 AM
Hi Lucian Chiriac,

Unfortunately at the time being RadTreeView does not support hierarchical binding to LinqDataSource. Binding via the DataFieldID/DataFieldParentID works only with Sql/AccessDataSource and when directly binding to DataTable, DataSet or DataView.

Regards,
Albert
the Telerik team

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Lucian Chiriac
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answered on 28 May 2008, 07:43 AM
Thank you for the response. Looking forward for the next version :)
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John Billiris (JSBBS)
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answered on 13 Jun 2008, 01:13 AM
Disappointing. I had a requirement for the very same hierarchical binding concept.

I don't wish to use a DataSet/DataTable/DataView, so it's now to be done the good ol' way... hand-coding.

:-(
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Lucian Chiriac
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Atanas Korchev
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Lucian Chiriac
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John Billiris (JSBBS)
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