protected void Page_Load(object sender, EventArgs e)
        {
            if (HttpContext.Current.Session == null || HttpContext.Current.Session["admin"] == null)
            {
                Response.Redirect("~/LoginP.aspx");
            }

            Page.Header.Title = "Fast food - Orders";


            if (IsPostBack == false)
            {
                SearchTextBox.Text      = "";
                this.order_state        = OrderStates.order_to_deliver;
                OrdersStateTextBox.Text = this.order_state;
                l1 = OrdersDAO.GetORDERsByState(this.order_state);
                OrdersListView.DataSource = l1;
                OrdersListView.DataBind();
            }
        }
        private void GetAndBindOrders(string order_state)
        {
            if (!string.IsNullOrEmpty(SearchTextBox.Text.Trim()))
            {
                this.search = SearchTextBox.Text.Trim();
            }

            if (DateCheckBox.Checked && !string.IsNullOrEmpty(DateTextBox.Text.Trim()))
            {
                if (string.IsNullOrEmpty(this.search))
                {
                    l1 = OrdersDAO.GetORDERsByStateAndDate(order_state, DateTextBox.Text.Trim());
                    OrdersListView.DataSource = l1;
                    OrdersListView.DataBind();
                }
                else
                {
                    l1 = OrdersDAO.GetORDERsByStateAndSearchAndDate(order_state, this.search.Trim(), DateTextBox.Text.Trim());
                    OrdersListView.DataSource = l1;
                    OrdersListView.DataBind();
                }
            }
            else
            {
                if (string.IsNullOrEmpty(this.search))
                {
                    l1 = OrdersDAO.GetORDERsByState(order_state);
                    OrdersListView.DataSource = l1;
                    OrdersListView.DataBind();
                }
                else
                {
                    l1 = OrdersDAO.GetORDERsByStateAndSearch(order_state, this.search.Trim());
                    OrdersListView.DataSource = l1;
                    OrdersListView.DataBind();
                }
            }
        }