C# asp GridView页面更改的性能不佳

特别是sharepoint中的my Webpart从WS获取对象数组

我的页面更改功能，其中dv是数据视图：

protected void gvList_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
              gvList.PageIndex = e.NewPageIndex;
              gvList.DataSource = dv;
              gvList.DataBind();
        }

 XmlSerializer serializer = new XmlSerializer(listAll.GetType());
    System.IO.StringWriter sw = new System.IO.StringWriter();
    serializer.Serialize(sw, listAll);

    ds = new DataSet();
    System.IO.StringReader reader = new System.IO.StringReader(sw.ToString());
    ds.ReadXml(reader);

    if (ds != null && ds.Tables[0].Rows.Count != 0)
    {
       dv = new DataView(ds.Tables[0]);
       gvList.DataSource = dv;
       gvList.DataBind();
    }

我的看法是：

<asp:GridView ID="gvList" runat="server" AutoGenerateColumns="False" 
GridLines="None" AllowPaging="True" AllowSorting="True" 
OnPageIndexChanging="gvList_PageIndexChanging" 
OnSorting="gvListaTickets_Sorting" ShowHeaderWhenEmpty="true" PagerStyle-
CssClass="Pagination" EnableViewState="false">`

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xml有完整的列表吗？有没有一种方法可以得到一个更短的xml？这个问题还伴随着一个小xml（11条记录）