RadTreeView Next and Previous buttons

[Ted]

what is the best way to implement a Previous and Next button for a Load on demand treeview?  bascially I have a treeview on the left hand side of the screen that when a node is clicked it loads on the right hand side of the tree.  basically the way you do in your documentation.  http://www.telerik.com/help/aspnet/treeview/tree_loadondemand.html

they just want a forward and previous button on the right hand side to move up and down the tree that way. 

[Plamen]

Hello Ted,

If I understand you correct, you need a button to help you expand the RadTreeview when using LoadOnDemand. Please find below a sample code that I added to the demo. It affects the ServerSide tree and expands the selected node:

<telerik:RadButton ID="RadButton1" runat="server" onclick="RadButton1_Click" Text="Expand selected node">

protected void RadButton1_Click(object sender, EventArgs e)
    {
        RadTreeNode selecetdNode = RadTreeView2.SelectedNode;
        if (selecetdNode.Nodes.Count == 0)
        {
            DataTable data = GetChildNodes(selecetdNode.Value);

            foreach (DataRow row in data.Rows)
            {
                RadTreeNode node = new RadTreeNode();
                node.Text = row["Title"].ToString();
                node.Value = row["CategoryId"].ToString();
                if (Convert.ToInt32(row["ChildrenCount"]) > 0)
                {
                    node.ExpandMode = TreeNodeExpandMode.ServerSide;
                }
                selecetdNode.Nodes.Add(node);
            }

            selecetdNode.Expanded = true;
        }
    }

Hope this helps.

Kind regards,
Plamen Zdravkov
the Telerik team

[chau minh tuan]

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