用户控件的编写问题
<div   style= "text-align:   center; ">
<table   cellpadding= "0 "   cellspacing= "0 "   class= "ML_TitlePt ">
<tr>  
<td   class= "ML_TdPtbg "> <span   class= "glowleft "> 产   品   列   表 </span> </td>
</tr>
</table>
<asp:Repeater   ID= "Repeater1 "   runat= "server "   DataSourceID= "AccessDataSource1 "   DataMember= "DefaultView ">
<HeaderTemplate>
<table   cellpadding= "1 "   cellspacing= "1 "   border= "0 "   style= "width:85%;   vertical-align:middle;   text-align:   center; ">
</HeaderTemplate>
<ItemTemplate>
                <tr>
                <td   style= "width:   21px;   height:   25px; "> <img   src= "Images/left_bullet01.gif "   width= "13 "   height= "11 "   alt= " "   /> </td>
                <td   align= "left "   style= "width:   150px; "> <a   href= "Product.aspx?BigClassName= <%#Eval( "BigClassName ")   %> "   class= "top_m_txt01 ">
                <%#Eval( "BigClassName ").ToString()%> </a> </td>
                </tr>
                <tr>
                <td   colspan= "2 "   style= "background-image:   url(Images/left_line01.gif);   height:   1px; "> </td>
</tr>
</ItemTemplate>
                <FooterTemplate> </table> </FooterTemplate>
</asp:Repeater>
        <asp:AccessDataSource   ID= "AccessDataSource1 "   runat= "server "   DataFile= "~/Data/http.ascx "
                SelectCommand= "SELECT   *   FROM   [Bs_PrBigClass] "> </asp:AccessDataSource>
</div>

这是一个用户控件的源码，有什么错误吗？  
为什么在页面调用的时候，总提示   元素“product”不是已知元素，原因是网站中可能存在编译错误

------解决方案--------------------
页面没注册控件
------解决方案--------------------
控件里面
<%@ Control Language= "C# " AutoEventWireup= "true " CodeFile= "WebUserControl.ascx.cs " Inherits= "WebUserControl " %>