Problem in Getting the childnodes without expand

[chithuraj]

Hi,
 i am tried to read all the nodes on button click event. But when i expand all the nodes in a tree and click button , i am
able to read all the nodes which have expanded. But i cant read the vales with  out expanding any of the values.

Here is my code...http:///

protected void btnBnext_Click(object sender, EventArgs e)
    {
        RadTreeView1.ExpandAllNodes();

        foreach (RadTreeNode NodeToExpand in RadTreeView1.GetAllNodes())
        {

            //# region Fields
            //StringBuilder strBldr = new StringBuilder();
            //# endregion
            //strBldr.Append("<root>");
            //strBldr.Append("</root>");
        }


    }

Plz help me!!

Regards!
chithuraj.j