GridView 序号，分页接续显示

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)    {        if (e.Row.RowIndex >= 0)        {            e.Row.Cells[0].Text = Convert.ToString(e.Row.DataItemIndex + 1);        }    }

int pageCount;//总页数    int currentPage = 1;//第定义当前页    private void Bind()    {        OracleConnection conn = new OracleConnection(ConnectionString);        string str = "select * from order order by id desc";        OracleDataAdapter da = new OracleDataAdapter(str, conn);        DataSet ds = new DataSet();        da.Fill(ds);        DataTable dt = ds.Tables[0];        //创建数据源        PagedDataSource pds = new PagedDataSource();        pds.DataSource = dt.DefaultView;        //允许分页        pds.AllowPaging = true;        //设置每页显示记录数        pds.PageSize = int.Parse("10");        //获取总页数        pageCount = pds.PageCount;        Label2.Text = pageCount.ToString();        pds.CurrentPageIndex = currentPage - 1;        //当前页        Label1.Text = Convert.ToString(currentPage);        LinkButton1.Enabled = true;        LinkButton2.Enabled = true;        LinkButton3.Enabled = true;        LinkButton4.Enabled = true;        if (Label1.Text == "1")        {            LinkButton1.Enabled = false;            LinkButton2.Enabled = false;        }        if (Label1.Text == Label2.Text)        {            LinkButton3.Enabled = false;            LinkButton4.Enabled = false;        }        GridView1.DataSource = pds;        GridView1.DataBind();            } //首页    protected void LinkButton1_Click(object sender, EventArgs e)    {        if (this.Label1.Text == "1")        { }        else        {            currentPage = 1;            Bind();        }    }    //上一页    protected void LinkButton2_Click(object sender, EventArgs e)    {        if (this.Label1.Text != "1")        {            currentPage = int.Parse(this.Label1.Text) - 1;            this.Label1.Text = currentPage.ToString();            Bind();        }    }    //下一页    protected void LinkButton3_Click(object sender, EventArgs e)    {        if (this.Label2.Text == this.Label1.Text)        {        }        else        {            currentPage = int.Parse(this.Label1.Text) + 1;            this.Label1.Text = currentPage.ToString();            Bind();        }    }    //末页    protected void LinkButton4_Click(object sender, EventArgs e)    {        if (this.Label2.Text != this.Label1.Text)        {            this.Label1.Text = this.Label2.Text;            currentPage = int.Parse(this.Label1.Text);            Bind();        }    }