HyperLink 嵌在 DataList 出问题！已经搞定

<asp:DataList id="DataList1" runat="server" RepeatColumns="3" RepeatDirection="Horizontal" CellSpacing="5" CellPadding="5" Width="247px" Height="142px">
                        <HeaderTemplate>
                            <FONT face="宋体">
                                <P>
                                    <asp:Label id="Label1" runat="server" Width="84px" ForeColor="Brown">图书分类列表</asp:Label>
                                    <br>
                                    -------------
                                </P>
                            </FONT>
                        </HeaderTemplate>
                        <ItemTemplate>
                            <asp:HyperLink id="HyperLink1" Text='<%# DataBinder.Eval(Container.DataItem,"LeiBieMC")%>' NavigateUrl="<%#"list.aspx?typeid="+DataBinder.Eval(Container.DataItem,"IDs")%>" runat="server">
                            </asp:HyperLink>
                        </ItemTemplate>
                        <SeparatorTemplate>
                            <FONT face="宋体"></FONT>
                        </SeparatorTemplate>
                    </asp:DataList>

居然不能转到视图状态，问题出在NavigateUrl后面的值。提示以下的错误信息：

“未能在设计视图中打开，"<%…"值"…%>" 块中，以不同方式将值括起来 ”