GridView高效分页和搜索功能的实现代码(4)

protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)//首次进行该页时，页面初始化
            {
                RecordsCount = GetRecordsCount("default");//默认信息总数
                PagesCount = RecordsCount / PAGESIZE + OverPage();//默认的页总数
                ViewState["PagesCount"] = RecordsCount / PAGESIZE - ModPage();//保存末页索引，比页总数小1
                ViewState["PageIndex"] = 0;//保存页面初始索引从0开始
                ViewState["JumpPages"] = PagesCount;
                //保存页总数，跳页时判断用户输入数是否超出页码范围
                //显示lbPageCount、lbRecordCount的状态
                lbPageCount.Text = PagesCount.ToString();
                lbRecordCount.Text = RecordsCount.ToString();
                //判断跳页文本框失效
                if (RecordsCount <= 10)
                {
                    GotoPage.Enabled = false;
                }
                    GridViewDataBind("default");//调用数据绑定函数TDataBind()进行数据绑定运算
            }
        }