c#命名空间不能直接包含字段或方法之类的成员————在线等

<asp:HyperLinkColumn DataNavigateUrlField="NewsId" DataNavigateUrlFormatString="ShowNews.aspx?NewsId={0}" DataTextField="title" SortExpression="title" HeaderText="title" NavigateUrl="NewsId">
<HeaderStyle Width="30px" HorizontalAlign="Center"></HeaderStyle>
<ItemStyle Width="30px" HorizontalAlign="Center"></ItemStyle>
</asp:HyperLinkColumn>
<asp:HyperLinkColumn DataNavigateUrlField="NewsId" DataNavigateUrlFormatString="ShowNews.aspx?newsid={0}" DataTextField="title" SortExpression="title" HeaderText="title" NavigateUrl="NewsId">
<HeaderStyle Width="30px" HorizontalAlign="Center"></HeaderStyle>
<ItemStyle Width="30px" HorizontalAlign="Center"></ItemStyle>
</asp:HyperLinkColumn>
<asp:HyperLinkColumn DataNavigateUrlField="NewsId" DataNavigateUrlFormatString="ShowNews.aspx?newsid={0}" DataTextField="title" SortExpression="title" HeaderText="Book Name"></asp:HyperLinkColumn>