AspNETpager 分页控件问题

[祁乐无穷7]

 protected void Page_Load(object sender, EventArgs e)
    {
        if(!IsPostBack){
            DataBind();
            repeaterDataBind();
            
        }
    }
    int pageSize = 4;//显示4条记录
    int currentPage = 1;//当前页 

    /// <summary>
    /// 绑定DropDownList
    /// </summary>
    public void DataBind()
    {
        TStar.Web.Common.BindDropDownList(BLL.SectionBLL.GetSection, this.ddlLsbk, "SectionName", "id", null);
        TStar.Web.Common.BindDropDownList(BLL.Global.SystemCode.DtJc_sjlb,this.ddlFbsj,"Mc","Dm",null);
        
    }

    //绑定repeater
    public void repeaterDataBind()
    {
        this.AspNetPager1.PageSize = pageSize;
        this.AspNetPager1.RecordCount = BLL.ArticleBLL.GetArticleCount();//获得总记录数
        this.rptResult.DataSource = BLL.ArticleBLL.GetArticleByPage(currentPage, pageSize);
        this.rptResult.DataBind();

    }

    /// <summary>
    /// 点击查询事件
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void btnQuery_Click(object sender, EventArgs e)
    {

        

        
    }

    protected void AspNetPager1_PageChanged(object sender, EventArgs e )
    {

        this.rptResult.DataSource = BLL.ArticleBLL.GetArticleByPage(currentPage+1, pageSize);
        this.rptResult.DataBind();
    }

我这样写了，能实现下一页，但是上一页、首页、尾页，我该怎么实现？
（求大神帮助啊，本人是超级菜鸟。）