private static void DelButtonClick(object sender, AlertButtonClickEventArgs e)
        {
            var notifcation = e.AlertForm.AlertInfo.Tag as NotificationDTO;

            if (notifcation == null)
            {
                return;
            }
            if (notifcation.NotificationRecipientId == Guid.Empty)
            {
                return;
            }
            IObjectSpace objectSpace = new ODataObjectSpace();

            if (e.ButtonName == "DelNotification")
            {
                e.Button.Name = "Deleted";
                var recipent = objectSpace.GetOrNew("NotificationRecipient", notifcation.NotificationRecipientId, null);
                objectSpace.DeleteObject("NotificationRecipient", recipent);
                objectSpace.SaveChanges();
                notifcation.NotificationRecipientId = Guid.Empty;
                timer_Elapsed(null, null);
            }
            else if (e.ButtonName == "MarkReaded")
            {
                e.Button.Name = "Marked";
                MarkReaded(objectSpace, notifcation);
                e.Button.Image = new Bitmap(WinFormsResourceService.GetBitmap("sendsysmsg"), new Size(16, 16));
                timer_Elapsed(null, null);
            }
        }