I am new at this Web pgm so forgive. Why am I getting error on this statement

Why am I getting error on this statement: THE SERVER TAG IS NOT WELL FORMED
<asp:Label ID="Label1" runat="server" Text='<%Eval("ID")%>'
I am also tryed with <asp:Label ID="Label1" runat="server" Text='<%#Eval("ID")%>'    
I get same error.