private void SetCategories()
    {
        var listClass = new ListClass();
        var list      = listClass.GetList();

        ddl_categories.DataSource     = list;
        ddl_categories.DataTextField  = "Title";
        ddl_categories.DataValueField = "Id";
        ddl_categories.DataBind();

        //ddl_categories.Items.Insert(0, new ListItem("- Select -", "-1"));
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        var listClass = new ListClass();
        var list      = listClass.GetList();

        lit_menu.Text = "<ul data-role=\"listview\" data-filter=\"true\" data-filter-placeholder=\"Search\">";

        lit_menu.Text += "<li data-role=\"list-divider\">Categories</li>";
        lit_menu.Text += "<li><a href=\"Default.aspx\">All</a></li>";
        foreach (var item in list)
        {
            lit_menu.Text += string.Format("<li><a href=\"List.aspx?id={0}\">{1}</a></li>", item.Id, item.Title);
        }

        lit_menu.Text += "</ul>";
    }