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Cannot get the Selected Node from the ClientSide

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TreeView

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

MMagnumPI9 asked on 25 Jul 2008, 08:20 PM

I am trying to find the selected node in a TreeView on the client side.

I have tried the code in this example which is linked to in a similar thread listed here.

I am not able to figure out what I am doing wrong. When calling GetSelectedNodes() I contiune to get the error message "Object does not support this property or method". I have tried setting MultiSelect = true and false with the same error.

Here is a sample of my code.

    
            <body> 
        
                <script type="text/javascript">  
        
                    function getSelectedNodes()  
        
                    {  
        
                        var tree = <%= RadTreeView1.ClientID %>;  
        
                        var nodes = tree.GetSelectedNodes();  
        
                        alert(nodes.length);  
        
                    }  
        
                </script> 
        
                <form id="form1" runat="server">  
        
                <asp:ScriptManager ID="ScriptManager1" runat="server">  
        
                </asp:ScriptManager> 
        
                <telerik:RadTreeView ID="RadTreeView1" runat="server">  
        
                    <Nodes> 
        
                        <telerik:RadTreeNode runat="server" Expanded="True" Text="1" Value="1" /> 
        
                    </Nodes> 
        
                </telerik:RadTreeView> 
        
                <input id="Button1" type="button" value="Get Selected Node" onclick="getSelectedNodes();" /> 
        
                </form> 
        
            </body>

Justin

1 Answer, 1 is accepted

answered on 28 Jul 2008, 11:11 AM

RadTreeViewGetSelected.zip

Hi Justin,

Thank you for contacting Telerik Support.

The example you've tried is about "Classic" RadTreeView. For RadTreeView for ASP.NET AJAX you should use the following approach:

    
            <script type="text/javascript">     
        
             function getSelectedNodes()     
        
             {     
        
                var tree= $find("<%= RadTreeView1.ClientID %>");  
        
                var nodes = tree.get_selectedNodes();  
        
                alert(nodes.length);    
        
             }    
        
            </script>

You can read more about RadTreeView object here. Please check out the attached sample project for a reference.

All the best,
Yana
the Telerik team

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