DropDown inside gridview

[sheraz_aries]

Now the dropdown displaying the current value from my db but how do i update the selected value so that it save in database.

# Protected Sub GV_ApproveNomination_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GV_ApproveNomination.RowDataBound  
   
   
     If e.Row.RowType = DataControlRowType.DataRow Then  
         Dim cmbGender As DropDownList = CType(e.Row.FindControl("DdlGender"), DropDownList)  
   
         cmbGender.SelectedValue = GV_ApproveNomination.DataKeys(e.Row.RowIndex).Values(1).ToString()  
         cmbGender.DataBind()  
   
     End If  
 End Sub

 <asp:TemplateField HeaderText="Gender">  
     <ItemTemplate>  
         <asp:Label ID="lblGender" runat="server" Text='<%# Eval("iGender") %>'></asp:Label>  
     </ItemTemplate>  
   
     <EditItemTemplate>  
       
      <asp:DropDownList ID="DdlGender" runat="server" SelectedValue='<%# Trim(Eval("iGender"))%>'>  
             <asp:ListItem Value="M" Text="Male"></asp:ListItem>  
             <asp:ListItem Value="F" Text="Female"></asp:ListItem>  
     </asp:DropDownList>  
       
           
     </EditItemTemplate>  
 </asp:TemplateField>