Placer une variable dans un lien

<%# Eval("ID_CAT") %>

    <asp:DataList ID="DataList3" runat="server" BackColor="LightGoldenrodYellow" 
        BorderColor="Tan" BorderWidth="1px" CellPadding="2" DataKeyField="ID_QCM" 
        DataSourceID="SqlDataSource3" ForeColor="Black" Width="499px">
        <FooterStyle BackColor="Tan" />
        <AlternatingItemStyle BackColor="PaleGoldenrod" />
        <SelectedItemStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" />
        <HeaderStyle BackColor="Tan" Font-Bold="True" />
        <ItemTemplate>
            N°QCM:
            <asp:Label ID="ID_QCMLabel" runat="server" Text='<%# Eval("ID_QCM") %>' />
            <br />
            Nombre de points:
            <asp:Label ID="NB_POINTSLabel" runat="server" Text='<%# Eval("NB_POINTS") %>' />
            <br />
            Etat:
            <asp:Label ID="ETATLabel" runat="server" Text='<%# Eval("ETAT") %>' />
            <br />
            Nom du QCM:
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='ListeQCM.aspx?qcm=<%# Eval("ID_QCM")'>Eval("LIB_QCM")</asp:HyperLink>
<% }
            <br />
            <br />
        </ItemTemplate>
    </asp:DataList> 

<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%# "ListeQCM.aspx?qcm=" + Eval("ID_QCM") %>'>'<%# Eval("LIB_QCM") %>'</asp:HyperLink>