<%@ Import namespace="System.Reflection"%>
<SCRIPT RUNAT="SERVER" LANGUAGE="C#">
void Page_Load()
{
  System.Security.Principal.IPrincipal princ = HttpContext.Current.User;
  Type type = princ.GetType();

  // chiamata necessaria per far caricare i ruoli

  princ.IsInRole("Test");

  // ricavo i ruoli con reflection

  String[] roles = (String[]) type.GetField("m_roles", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(princ);
  dg.DataSource = roles;
  dg.DataBind();
}
</SCRIPT>

<asp:datagrid id="dg" runat="server" />