passing parameter through iframe src?

Question

Hi I have taken ModalPopupExtender in this a panel

 <cc1:ModalPopupExtender ID="ModalPopupExtender1" runat="server"
     okcontrolid="btnOkay"
    targetcontrolid="btnAdd"
    popupdraghandlecontrolid="PopupHeader" drag="true"
    >
    </cc1:ModalPopupExtender>


 <asp:panel id="Panel_Category" style="display: none" runat="server" >
            <div class="popup_Container" style="size:auto">
           
                <div class="popup_Titlebar" id="Div3">
                    <div class="TitlebarLeft">Quota</div>
                    <div id="ctgcancelcross"class="TitlebarRight"  ></div>
                </div>

                <!--<iframe id="Iframe1" frameborder="0" src="StoreDataFrom/frmCategory.aspx"
                    scrolling="auto" style="width:350px; height:105px;"></iframe>
                   
                   -->
                   <iframe id="Iframe1" frameborder="0" src=  "StoreDataFrom/frmCategory.aspx?ID=<%#ID%>" //here i want to pass the parameter but it not working.
                    scrolling="auto" runat="server" style="width:350px; height:105px;"></iframe>
            </div>
             <input id="Button1" type="button" value="Done" />
                    <input id="Button2" type="button" value="Cancel" />
    </asp:panel>