string sqlstr = "  1=1 ";      
        KD_YUEJIA kdyj = new KD_YUEJIA();
        DataSet ds = kdyj.GetList(sqlstr);
        this.Repeater1.DataSource = ds.Tables[0].DefaultView;
        Repeater1.DataBind();

        Response.ContentType = "application/vnd.ms-excel"; //关键的一行
        Response.Charset = "";
        this.EnableViewState = false;
        System.IO.StringWriter sw = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter hw = new HtmlTextWriter(sw);
        this.Repeater1.RenderControl(hw);
        Response.Write(sw.ToString());
        Response.End();
        searchOrders(sqlstr); //导出全部之后,还要分页 如果是分页导入的话,放到searchOrders中