datalist分页设置

 protected void Page_Load(object sender, EventArgs e)    {        if (!Page.IsPostBack)        {            //datalist绑定            DataList1_content();        }    }    /*-------------datalist分页----------------------------------------------*/    private void DataList1_content()    {        PagedDataSource ps = new PagedDataSource();//分页实例        DataTable dtt = new InnerBLL().SelectAll();        ps.DataSource = dtt.DefaultView;//绑定分页        ps.AllowPaging = true; //允许分页        ps.PageSize = 10;//每页条数        int maxpage;//总共多少页        if (ps.Count == 0) return;        if (ps.DataSourceCount % ps.PageSize > 0)//计算总页数        {            maxpage = ps.DataSourceCount / ps.PageSize + 1;//有余数要加1        }        else { maxpage = ps.DataSourceCount / ps.PageSize; }        Session["maxpage"] = maxpage;//保存总页数，在翻页判断时使用        int curpage;//当前页码        if (Session["curpage"] == null)        {            curpage = 1;//初始化页码        }        else { curpage = Convert.ToInt32(Session["curpage"].ToString()); }        ps.CurrentPageIndex = curpage - 1;//页索引从0开始编号        Session["curpage"] = ps.CurrentPageIndex + 1;//当前页码        lblpage.Text = "第" + Session["curpage"].ToString() + "页（共" + Session["maxpage"].ToString() + "页）";        DataList1.DataSource = ps;        DataList1.DataBind();    }    /*----------------------分页按钮－－－－－－－－－－－－－－－－－－－－－－*/    //首页    public void lbfir_Click(object sender, System.EventArgs e)    {        Session["curpage"] = 1;        DataList1_content();    }    //上一页    public void lbpre_Click(object sender, System.EventArgs e)    {        if (Convert.ToInt32(Session["curpage"].ToString()) > 1)//当前页大于1，即首页，则减1        { Session["curpage"] = Convert.ToInt32(Session["curpage"].ToString()) - 1; }        DataList1_content();    }    //下一页    public void lbnext_Click(object sender, System.EventArgs e)    {        if (Convert.ToInt32(Session["curpage"].ToString()) < Convert.ToInt32(Session["maxpage"].ToString()))//当前页小于最大页，则加1        { Session["curpage"] = Convert.ToInt32(Session["curpage"].ToString()) + 1; }        DataList1_content();    }    //末页    public void lblast_Click(object sender, System.EventArgs e)    {        Session["curpage"] = Convert.ToInt32(Session["maxpage"].ToString());        DataList1_content();    }    /*----------------------分页按钮end－－－－－－－－－－－－－－－－－－－－－－*/    //转到指定页    public void bt1_Click(object sender, System.EventArgs e)    {        int num;        if (int.TryParse(tb1.Text,out num))//判断输入的是否是整数        {            if (Convert.ToInt32(Session["maxpage"].ToString()) >= num & num>0)            {                Session["curpage"] = num;//计算指定页                DataList1_content();            }            else { Page.ClientScript.RegisterStartupScript(GetType(), "message", "<script>alert('请先输入正确页码！')</script>"); }        }        else        {            Page.ClientScript.RegisterStartupScript(GetType(), "message", "<script>alert('请先输入正确页码！')</script>");        }    }    /*--------------------------------------datalist分页end----------------------------------------------*/