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TreeNode Expand action (VB.net)

<%@ Page Language=VB Debug=true %>
<%@ Import Namespace="Microsoft.Web.UI.WebControls" %>
<%@ Register TagPrefix="IEControls" 
    Namespace="Microsoft.Web.UI.WebControls" 
    Assembly ="Microsoft.Web.UI.WebControls"
%>
<script runat=server>
Sub Node_Expand(ByVal Sender as Object, _
    ByVal E as TreeViewClickEventArgs)
    lblMessage.Text = "You expanded node " _
        & E.Node.ToString() & "."
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>Writing Code that Fires When a TreeNode Expands</TITLE>
</HEAD>
<BODY LEFTMARGIN="40">
<form runat="server">
<IEControls:treeview
    id="tvBasic"
    onexpand="Node_Expand"
    autopostback="True"
    runat="server">
    <IEControls:treenode Text="Clothing">
        <IEControls:treenode Text="Men's"/>
        <IEControls:treenode Text="Women's"/>
        <IEControls:treenode Text="Children's">
            <IEControls:treenode Text="Socks"/>
            <IEControls:treenode Text="Shirts"/>
            <IEControls:treenode Text="Pants"/>
        </IEControls:treenode>
    </IEControls:treenode>
    <IEControls:treenode Text="Electronics">
        <IEControls:treenode Text="TV/VCR"/>
        <IEControls:treenode Text="Audio"/>
        <IEControls:treenode Text="Car"/>
        <IEControls:treenode Text="Computer"/>
    </IEControls:treenode>
</IEControls:treeview>
<BR>
<asp:Label
    id="lblMessage"
    runat="server"
    FOnt-Bold="True"
/>
</form>
</BODY>
</HTML>








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