How to hide button in OLAP Client toolbar?

protected void Page_Load(object sender, EventArgs e)
{ 
    this.Hidetoolbaritems(this.OlapClient1.OlapClientToolBar.Controls);               
}
private void Hidetoolbaritems(ControlCollection parent Control)
{
   foreach (Control ctrl in parent Control)
   {
      if (ctrl is LinkButton || ctrl is HtmlGenericControl)
      {
          // To hide the connection option in the toolbar.
          if (ctrl.ID == "connectionImg")
             ctrl.Visible = false;
      }
      else
      {
          Hidetoolbaritems (ctrl.Controls);
      }
   }
}

Protected  Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) 
    Me.Hidetoolbaritems(Me.OlapClient1.OlapClientToolBar.Controls)
End Sub
Private  Sub Hidetoolbaritems(ByVal parent As ControlCollection)
   Dim ctrl As Control
   For Each ctrl In parent Control
      If TypeOf ctrl Is LinkButton Or ctrl Is HtmlGenericControl Then
          ' To hide the connection option in the toolbar.
          If ctrl.ID = "connectionImg" Then
             ctrl.Visible = False
          End If
      Else 
          Hidetoolbaritems (ctrl.Controls)
      End If
   Next
End Sub

<script type="text/javascript">
    $(document).ready(function () {
       $(".connectionImg").hide();
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(ClientEndRequest);
    });
    function ClientEndRequest(sender, args) {
        $(".connectionImg ").hide();
    }
</script>