Dropdown list loses its value on Edit

Hi,
I have a gridview on edit of which a aspx page opens. When I see the dropdownlist the value is blank. I think i have missed some thing. Please see the code for your reference:-
<asp:TemplateField HeaderText="Action" HeaderStyle-Width="127" > <ItemTemplate> <asp:LinkButton ID='lnkView' CommandName='view' Text='View' runat='server' CommandArgument='<%# Eval("jobId") %>'></asp:LinkButton> | <asp:LinkButton ID='lnkedit' CommandName='e' Text='Edit' runat='server' CommandArgument='<%# Eval("jobId") %>'></asp:LinkButton> | <asp:LinkButton ID='lnkdel' CommandName='d' Text='Delete' runat='server' CommandArgument='<%# Eval("jobId") %>' OnClientClick="return confirm('Are you sure to delete?');"></asp:LinkButton> </ItemTemplate ...