Selected value

i have dropdownlist and i need make Selectedvalue for this dropdownlist.that can be easy but my dropdownlist is inside gridview and wen i try to just write selectedvalue =.... it show error.. this is my code. it is possible to write in this code without usiong code behinde?
 <asp:TemplateField HeaderText="novads" SortExpression="novads">                     <EditItemTemplate>                         <asp:DropDownList ID="DropDownList1" runat="server" >                             <asp:ListItem Text="izvelaties novadu" Value="izvelaties no ...