Adding a checkbox to a repeater control

[Doogie]

Why is this code not allowing me to add a checkbox to it?

<asp:repeater ID="RptTrip" Runat="server" EnableViewState ="false">
<ItemTemplate >
<asp:Checkbox AutoPostBack="T rue" ID="cb" runat="server"
Checked="false" ></asp:Checkbox>
<trip_detail_in fo trip_detail_id ='<%#
Container.DataI tem("trip_detai l_id")%>'
leg_start_dt = '<%# Container.DataI tem("leg_start_ dt")%>'
pickup_iso_dt = '<%# Container.DataI tem("pickup_iso _dt")
%>' />
</ItemTemplate>
</asp:repeater>

I keep getting a "Control 'RptTrip__ctl0_ cb' of type 'CheckBox' must
be placed inside a form tag with runat=server. " message even though I
obviously already have that tag in the control.

[Doogie]

Never mind. I found it...the xml the repeater code was tied to is not
inside the form tag. If I put it in the form tag it no longer gives
me that error (but it does seem to indicate that xml tag should not be
inside the form tag so I need to delve into this further.