I have followed this simple example and implemented similarly:-

http://www.telerik.com/help/aspnet-ajax/tree_databindinghierarchical.html

The problem:- GetDataSet() method returns a DataSet with the complete Ques table with all the rows and columns(QuesID,QuesParentID,QuesAns,Active,QuesTypeID and so on)

Now the probelm is that the RadTreeview is not binding well. Like The root node displays Questions but the the child nodes are not displaying the correspoding answer. Also, some root nodes do not have a child node at all. Those root nodes that DO have a child node are displaying Questions as their text and not Answers. I surmise it's something wrong with the BindTree() method only. What could it be? I mean RADTreeView is implemented in a very simple manner in that link above. I only followed accordingly. What is wrong??

aspx page;-

<asp:Content ID="Content3" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

<telerik:RadTreeView runat="server" ID="tree1" OnNodeDataBound="tree1_NodeDataBound"></telerik:RadTreeView>

</asp:Content>

Code Behind :-

 public partial class TestTree :
    System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                BindTree(tree1);
            }
        }

        private DataSet GetDataSet()
        {
            bllQues objbllQues = new bllQues();
            var ds = new DataSet();
            return objbllQues.GetQues();

        }

        protected void BindTree(RadTreeView treeView)
        {
            DataSet ds = new DataSet();
            ds = GetDataSet();
            tree1.DataTextField = "Ques";
            tree1.DataValueField = "QuesAns";
            tree1.DataFieldID = "QuesID";
            tree1.DataFieldParentID = "QuesParentID";
            tree1.DataSource = ds;
            tree1.DataBind();
        }

        protected void tree1_NodeDataBound(object sender,
    RadTreeNodeEventArgs e)
        {
            e.Node.ToolTip = (e.Node.DataItem as
    DataRowView)["QuesAns"].ToString();
        } }