固定DataGrid的标题

样式：

1.FixGridHeaderAbove
2 

代码：

1<div style="OVERFLOW: auto; HEIGHT: 380px; WIDTH: 500;" align="center">
2                            <asp:DataGrid id="DataGrid1" runat="server">
3                                <HeaderStyle CssClass="FixGridHeaderAbove"></HeaderStyle>
4                            </asp:DataGrid>
5                        </div>