DataGrid 滚动而表头不动

设置Css如下

  <style>                .fixTitle { BACKGROUND: navy; COLOR: white; POSITION: relative; ; TOP: expression(this.offsetParent.scrollTop) }        .scorllDataGrid { OVERFLOW-Y: scroll; HEIGHT: 300px }        </style>

再在页面设置DataGrid属性

<div class="scorllDataGrid">                        <asp:datagrid id="dgClassList" runat="server" BorderColor="#3366CC" BorderStyle="None" BorderWidth="1px"                            BackColor="White" CellPadding="4" AutoGenerateColumns="False">                            <FooterStyle ForeColor="#003399" BackColor="#99CCCC"></FooterStyle>                            <SelectedItemStyle Font-Bold="True" ForeColor="#CCFF99" BackColor="#009999"></SelectedItemStyle>                            <ItemStyle ForeColor="#003399" BackColor="White"></ItemStyle>                            <HeaderStyle Font-Bold="True" ForeColor="#CCCCFF" CssClass="fixTitle" BackColor="#003399"></HeaderStyle>                            <Columns>                                                        </Columns>                            <PagerStyle HorizontalAlign="Left" ForeColor="#003399" BackColor="#99CCCC" Mode="NumericPages"></PagerStyle>                        </asp:datagrid></div>