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[Solved] TreeView - Binding to Hierarchical Data

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TreeView

This is a migrated thread and some comments may be shown as answers.

mfrimu asked on 06 Feb 2009, 10:45 PM

Hello,

I'm trying to bind the TreeView to hierarchical data in a table. I used ItemID and ParentID, but tree ignores hierarchy.

    
            <telerik:RadTreeView ID="RadTreeView1" Runat="server"   
        
                    DataSourceID="LinqDataSource1" DataFieldID="ItemID" DataFieldParentID="ParentID"   
        
                    DataTextField="Title" EnableAjaxSkinRendering="true" Skin="Default"   
        
                    CausesValidation="False" EnableDragAndDrop="True"   
        
                    EnableDragAndDropBetweenNodes="True" MaxDataBindDepth="25"   
        
                    SingleExpandPath="True" Width="350px"   > 
        
                    <CollapseAnimation Type="OutQuint" Duration="100"></CollapseAnimation> 
        
                    <ExpandAnimation Duration="100"></ExpandAnimation> 
        
            </telerik:RadTreeView> 
        
                <br /> 
        
                <br /> 
        
                <asp:LinqDataSource ID="LinqDataSource1" runat="server"   
        
                    ContextTypeName="DataClassesDataContext" OrderBy="ParentID, SortOrder"   
        
                    TableName="Items" Where="ClientID == @ClientID">  
        
                    <WhereParameters> 
        
                        <asp:ControlParameter ControlID="DropDownList1" DefaultValue="1"   
        
                            Name="ClientID" PropertyName="SelectedValue" Type="Int64" /> 
        
                    </WhereParameters> 
        
                </asp:LinqDataSource>

The tree displays all data as if it's on the root node.

Please help,

Michael

[Solved] TreeView - Binding to Hierarchical Data

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