设置了gridview的编辑模板后,为什么无法更新编辑?

Question

<asp:TemplateField HeaderText="仪表名称" SortExpression="MeterName">
                <EditItemTemplate>
                    <asp:DropDownList ID="feeItemName" runat="server" Height="16px" Width="87px" DataSourceID="SqlDataSource2"
                        DataTextField="meterName" DataValueField="meterName">
                    </asp:DropDownList>
                </EditItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="feeItemName" runat="server" Text='<%# Bind("MeterName") %>'></asp:Label>
                </ItemTemplate>
                <ControlStyle />
            </asp:TemplateField>

Answer 1

更新数据是要有代码的，你的代码怎么写的？