public void LoadData()
        {
            string username = Request.Cookies["usernameLoginSystem"].Value;
            var    acc      = AccountController.GetByUsername(username);

            if (acc != null)
            {
                if (acc.RoleID == 0 || acc.Username == "nhom_zalo502")
                {
                    ltrAddPost.Text = "<a href='/tao-thong-bao' class='h45-btn btn primary-btn'>Thêm mới</a>";
                }
            }

            string TextSearch  = "";
            string CreatedDate = "";
            string CreatedBy   = "";
            int    CategoryID  = 0;
            string AtHome      = "";
            string orderBy     = "";

            if (Request.QueryString["textsearch"] != null)
            {
                TextSearch = Request.QueryString["textsearch"].Trim();
            }
            if (Request.QueryString["categoryid"] != null)
            {
                CategoryID = Request.QueryString["categoryid"].ToInt();
            }
            if (Request.QueryString["createddate"] != null)
            {
                CreatedDate = Request.QueryString["createddate"];
            }
            if (Request.QueryString["athome"] != null)
            {
                AtHome = Request.QueryString["athome"];
            }
            if (Request.QueryString["createdby"] != null)
            {
                CreatedBy = Request.QueryString["createdby"];
            }
            if (Request.QueryString["orderby"] != null)
            {
                orderBy = Request.QueryString["orderby"];
            }

            txtSearchPost.Text           = TextSearch;
            ddlCategory.SelectedValue    = CategoryID.ToString();
            ddlCreatedDate.SelectedValue = CreatedDate;
            ddlAtHome.SelectedValue      = AtHome;
            ddlCreatedBy.SelectedValue   = CreatedBy;
            ddlOrderBy.SelectedValue     = orderBy;

            List <NotifyNewSQL> a = new List <NotifyNewSQL>();

            a = NotifyController.GetAllSql(CategoryID, TextSearch, AtHome, CreatedDate, CreatedBy, orderBy);

            pagingall(a);

            ltrNumberOfPost.Text = a.Count().ToString();
        }