急！！！！datalist分页

Question

public void BindData()
    {   
        //读取数据函数返回DATASET，这个我就不写了。你自己写吧
        DataTable dsTable = 你的函数名.Tables[0].DefaultView;
        PagedDataSource objPag = new PagedDataSource();//添加分页
        objPag.DataSource = dsTable;
        objPag.AllowPaging = true;//允许分页
        objPag.PageSize = 5; //分页大小
        int curPage;//当前页
        if (Request.QueryString["Page"] != null)
        {
            curPage = Int32.Parse(Request.QueryString["Page"]);
        }
        else
        {
            curPage = 1;
        }
        objPag.CurrentPageIndex = curPage - 1;//获取当前页的索引
        this.Label1.Text = curPage.ToString();//获取第一页
        this.Label2.Text = objPag.PageCount.ToString();//获取总的页
        //如果当前也不是首页,设置前一页
        if (!objPag.IsFirstPage)
        {
            HyperLink1.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(curPage - 1);
        }
        //如果当前的也不是尾页，则设置后页的链接地址
        if (!objPag.IsLastPage)
        {
            HyperLink2.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(curPage + 1);
        }
        //首页的链接
        HyperLink3.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=1";
        //尾页的链接
        HyperLink4.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + objPag.PageCount.ToString();
        DataList1.DataSource = objPag;
        DataList1.DataBind();
    }

Answer 1

curPage = (curPage<0 ? 0 : (curPage>=objPag.PageCount ? objPag.PageCount-1 : curPage));

Answer 2

protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            this.BindGridView();
        }
    }    //显示全部信息的视图,绑定
    private void BindGridView()
    {
        try
        {
            DataView dv = new DataView(dboperate.selectAll());
            dv.Sort = "bianhao DESC";
            this.GridView1.DataSource = dv;
            this.GridView1.DataBind();
            dv.Dispose();            this.LblCurrentIndex.Text = "当前页：" + Convert.ToString(this.GridView1.PageIndex + 1) + "  ";
            this.LblPageCount.Text = "总页数：" + this.GridView1.PageCount.ToString() + "  ";
            this.LblRecordCount.Text = "总记录数：" + dv.Table.DataSet.Tables["cuizpesctable"].Rows.Count.ToString() + " 条";            if (dv.Table.DataSet.Tables["cuizpesctable"].Rows.Count==0)
            {
                btnFirst.Visible = false;
                btnPrev.Visible = false;
                btnNext.Visible = false;
                btnLast.Visible = false;                LblCurrentIndex.Visible = false;
                LblPageCount.Visible = false;
                LblRecordCount.Visible = false;                LblNoRecord.Visible = true;
            }
            else if (this.GridView1.PageCount == 1)
            {
                btnFirst.Visible = false;
                btnPrev.Visible = false;
                btnNext.Visible = false;
                btnLast.Visible = false;
            }
        }
        catch (Exception ex)
        {
            Response.Write("数据库错误，错误原因：" + ex.Message);
            Response.End();
        }
    }
    protected void PagerButtonClick(object sender, EventArgs e)
    {
        string arg = ((LinkButton)sender).CommandArgument.ToString();
        switch (arg)
        {
            case "prev":
                if (this.GridView1.PageIndex > 0)
                {
                    this.GridView1.PageIndex -= 1;
                }
                break;
            case "next":
                if (this.GridView1.PageIndex < (this.GridView1.PageCount - 1))
                {
                    this.GridView1.PageIndex += 1;
                }
                break;
            case "last":
                this.GridView1.PageIndex = (this.GridView1.PageCount - 1);
                break;
            default:
                this.GridView1.PageIndex = 0;
                break;
        }
        this.BindGridView();
    }