Question regarding OnClientNodeClicking

[Dave]

I have a question about the OnClientNodeClicking event which fires right before postback. The get_node() retrieves a reference to the clicked on node. I am wondering if there is any way that I can determine which node the user came from (i.e. not the node that there are going to, but rather the node they were on before). The get_node().get_text() tells me the text of the node that the user clicked on, but I need to get the text of the node that they were previously on.

[Shinu]

Hi Dave,

One suggestion is saving the previously clicked node's text in a hiddenfield in the 'OnClientNodeClicked' event handler. Then you can access the hiddenfield to get the previously clicked node.

javascript:

    function OnClientNodeClicked(sender, args) {
        var hf = document.getElementById('HiddenField1');
        hf.value = args.get_node().get_text();
    }
    function OnClientNodeClicking(sender, args) {
        var hf = document.getElementById('HiddenField1');
        var text = hf.value;
        if (text != '') {
            alert(text);
        }
        else {
            alert("No previous node");
        }
    }

-Shinu.