如何给href动态赋值

怎么给href动态赋值？
                            <asp:Repeater ID="RepeaterChP" runat="server">
                                <ItemTemplate>
                                <li><a href="index.aspx?ID="+数据库得到的值>
                                    <% Eval("Title");%></a></li>
                                    </ItemTemplate>
                            </asp:Repeater>