I know this is simple but I can not figure out

i want use dynamically assignment for selectcommand in gridview/Accessdatasource controls but it does not return any records

Here is what I am using

<asp:AccessDataSource ID="OleDbDataSource1" Runat="server"
      SelectCommand='<%# Eval("SELECT ........ ")%>'

UpdateCommand="UPDATE ..... "
DataFile="D:\.....">
      <UpdateParameters>
      <asp:Parameter Name="Tracking_Number" Type="String" />
      <asp:Parameter Name="Order_Number" Type="Decimal" />
      <asp:Parameter Name="Order_Status" Type="Boolean" />
      </UpdateParameters>
 </asp:AccessDataSource>

SlectCommand is not working here but it's working OK without any <%

Can you please help.
Thanks a lot.