移页按钮

//当前页为首页或尾页时,首页,上一页按钮或下一页,尾页按钮不可用
        protected void isFirstLastPage()
        {
            if (hdUserList.PageCount != 1)
            {
                if (hdUserList.CurrentPageIndex == 0) { this.btnPrev.Enabled = false; this.btnFirst.Enabled = false; }
                else { this.btnPrev.Enabled = true; this.btnFirst.Enabled = true; }
                if (hdUserList.CurrentPageIndex == hdUserList.PageCount - 1) { this.btnNext.Enabled = false; this.btnLast.Enabled = false; }
                else { this.btnNext.Enabled = true; this.btnLast.Enabled = true; }
            }
            else
            { this.btnPrev.Enabled = false; this.btnNext.Enabled = false; }
        }