Hello,

It really depends on which property in Node you are storing the value, since the Node in UltraWebTree per se does not have a value property exposed. I can recommend using the DataPath property for transfering information from server to client (other than the Text property). For example:

protected void Page_Load(object sender, EventArgs e)
    {
        Node node = new Node();
        node.Text = "some node";
        node.DataPath = "data path value";

        UltraWebTree1.Nodes.Add(node);       
    }
   
 <ignav:UltraWebTree ID="UltraWebTree1" runat="server">
        <ClientSideEvents NodeClick="nodeClickHandler" />
       
    </ignav:UltraWebTree>
   
    <script language="javascript">

        function nodeClickHandler(treeId,nodeId) 
        {       
            var node = igtree_getNodeById(nodeId);
            if(node == null)
                return;
            var dataPath= node.getDataPath();
            alert(dataPath);
        }
   
    </script>

 For more information on what is avaialable in the CSOM of the Node object in UltraWebTree, please take a look at the following help article topic here:

http://help.infragistics.com/Help/NetAdvantage/NET/2008.2/CLR2.0/html/WebTree_Node_Object_CSOM.html

of couse

<ignav:UltraWebTree id="UltraWebTree1" runat="server" >                                                      
            <Levels>
                <ignav:Level Index="0"></ignav:Level>
                <ignav:Level Index="1"></ignav:Level>
                <ignav:Level Index="2"></ignav:Level>
            </Levels>
            <ClientSideEvents NodeClick="NodeClick" />                     
</ignav:UltraWebTree>
now I can get the text of the selected node,how to get the value?