DropDownList in Repeater

I have a repeater that contains an DropDownList in the ItemTemplate. I am trying to populate the dropdownlist based on the id of the current repreater record. Is there a way to set the value so that I can pass it to the datasource?
 Thanks for any help.

<asp:Repeater runat="server" ID="repItems">
<ItemTemplate>
<div style="width: 20%; float: left;">
<asp:Image ID="imgItem" runat="server" ImageUrl='<%# & ...