[Solved] How do you format TreeView ajax data?

[indeynz]

We are coding an MVC TreeView and need to be able to format the child nodes adding specific attributes.
We have added our custom attributes in the root node using HtmlAttributes.Add, ("NodeType" is being added to the root node in this example), but we are unable to attach the attributes to the child nodes.

Any help would be appreciated. Thanks.

Index.aspx

<%=Html.Telerik().TreeView()
    .Name("TreeViewUser")
    .ShowCheckBox(true)
    .ClientEvents(events => events
        .OnChecked("OnClientNodeChecked")
    )
        .BindTo(UserTreeViewModel.GetDefaultTreeNodes(), (item, user) =>
        {
            item.Text = user.Name;
            item.Value = user.ID.ToString();
            item.HtmlAttributes.Add("NodeType", user.Type);
            item.LoadOnDemand = true;
        })
        .DataBinding(dataBinding => dataBinding
            .Ajax().Select("LoadNodesMVC", "SendProfile")
        )
%>

SendProfileController.cs

[JsonParamFilter(Param = "node", TargetType = typeof(TreeViewItem))]
public virtual JsonResult LoadNodesMVC(TreeViewItem node)
{
    List<UserTreeViewModel> users = GetUsersFromSession();
    var nodes = from user in users
                where user.ParentID.ToString() == node.Value
                select new TreeViewItem()
                {
                    Text = user.Name,
                    Value = user.ID.ToString(),
                    Expanded = false
                };

    return Json(new { d = nodes.ToArray() });
}

[Rick]

Same problem.

The custom attribute is not being applied when Children are loaded on demand via Ajax.