Trying change an element in NodeTemplate

2 posts, 0 answers
  1. Tonyz289
    Tonyz289  avatar
    50 posts
    Member since:
    Jun 2011

    Posted 26 Jun 2013 Link to this post

    I am trying to change one element in the NodeTemplate of a Treeview and my code is not working. It executes fine but the change doesn't show up on the screen. What am I doing wrong?

    Here is the the code:
    protected void RadTreeView1_NodeDataBound (object sender, RadTreeNodeEventArgs e)
        e.Node.ExpandMode = TreeNodeExpandMode.ServerSide;
        if (e.Node.Text == "Retailers")
            RadTreeNode node = RadTreeView1.Nodes[0];
            HyperLink hyperLink = (HyperLink)node.FindControl ("HyperLink2");
            hyperLink.Visible = false;  // this what is want to do
            hyperLink.Text = "<span style=\"color: #BBBBBB\">X</span>"; // this is test to see that the Hyperlink Text changes
        // Neither of the above two lines produce the screen changes I am looking for

    Here is the defintion
    <telerik:RadTreeView ID="RadTreeView1" runat="server" CheckBoxes="True" MultipleSelect="True"
        EnableViewState="true" ShowLineImages="False" EnableEmbeddedSkins="False" Skin="tree_2"
        OnNodeClick="RadTreeView1_NodeClick" OnNodeDataBound="RadTreeView1_NodeDataBound"
        OnClientNodeCollapsed="OnClientNodeCollapsed" OnClientNodeExpanded="OnClientNodeExpanded" OnClientLoad="onLoad">
                <asp:Label ID="lblnodeText" Text='<%#Eval("Title") %>' runat="server" /><asp:Label
                    ID="lblCatId" Text='<%#Eval("Id") %>' runat="server" Visible="false"></asp:Label><asp:Label
                        ID="lblisCustomer" Text='<%#Eval("isCustomer") %>' runat="server" Visible="false"></asp:Label><asp:Label
                            ID="Description" runat="server" Text='<%#Eval("description") %>' Visible="false" /><asp:HiddenField
                                ID="DescriptionVisible" runat="server" Value='<%#Eval("descriptionVisible") %>' />
    <asp:HyperLink ID="HyperLink2" runat="server" NavigateUrl=<%# "javascript:Popup_Window('category_detail','" + DataBinder.Eval(Container.DataItem, "id").ToString() + "')"%> style="text-decoration: none;"><span style="color: #BBBBBB">e</span></asp:HyperLink>
  2. Kate
    Kate avatar
    1898 posts

    Posted 01 Jul 2013 Link to this post

    Hello Tony,

    I prepared a very simplified runnable page that demonstrates the desired approach. I can find the control in the node template and set its visibility property to false. Give it a try and let me know how it goes from your side.

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