从Gridview的Item模板字段中的单选按钮触发updatepanel？

Question

我有两个网格。它们放在两个更新面板中。

当我从下拉菜单中选择一个项目时，第一个更新面板触发并加载数据。现在工作正常。这是第一个gridview的设计。

 <asp:UpdatePanel runat="server">
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="ddLocations" />
                </Triggers>
                <ContentTemplate>
                    <div class="rounded_corners">
                        <asp:GridView ID="gridMainCategories" Width="100%" HeaderStyle-BackColor="#3AC0F2"
                            HeaderStyle-ForeColor="White" RowStyle-BackColor="White" RowStyle-ForeColor="#3A3A3A" runat="server"
                            AutoGenerateColumns="False" BorderWidth="1px" OnPageIndexChanging="gridMainCategories_PageIndexChanging"
                            ClientIDMode="Static" ShowHeaderWhenEmpty="True" DataKeyNames="cat_id"
                            AllowPaging="True">
                            <Columns>
                                <asp:TemplateField>
                                    <ItemTemplate>
                                        <asp:RadioButton runat="server" ID="rdbSelectedMainCategory" Width="50" GroupName="A" OnCheckedChanged="rdbSelectedMainCategory_CheckedChanged" />
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:BoundField HeaderText="Main Category Id" DataField="cat_id" Visible="false">
                                </asp:BoundField>
                                <asp:BoundField HeaderText="Name (Eng)" DataField="cat_name_eng" ReadOnly="true">
                                    <HeaderStyle Width="40%"></HeaderStyle>
                                </asp:BoundField>
                                <asp:BoundField HeaderText="Name (Sin)" DataField="cat_name_sin" ReadOnly="true">
                                    <HeaderStyle Width="40%"></HeaderStyle>
                                </asp:BoundField>
                                <asp:BoundField HeaderText="Active Status" DataField="cat_active_status" ReadOnly="true">
                                    <HeaderStyle Width="5%"></HeaderStyle>
                                </asp:BoundField>
                                <asp:BoundField HeaderText="Order No" DataField="cat_order_no" ReadOnly="true">
                                    <HeaderStyle Width="10%" />
                                </asp:BoundField>
                                <asp:CommandField ShowEditButton="True" ButtonType="Image" EditImageUrl="~/images/edit.png" ShowCancelButton="False">
                                    <HeaderStyle Width="100px" />
                                </asp:CommandField>
                            </Columns>

                            <HeaderStyle BackColor="Gray" ForeColor="White" Height="40px"></HeaderStyle>

                            <RowStyle Height="20px"></RowStyle>
                        </asp:GridView>
                    </div>
                </ContentTemplate>
            </asp:UpdatePanel>

所以我想要做的是当我选择单选按钮时，我要填充另一个网格视图。我在下面的事件

中编写了代码

 protected void rdbSelectedMainCategory_CheckedChanged(object sender, EventArgs e)
    {
     }

这是我的第二个更新面板，带有第二个网格视图

 <asp:UpdatePanel runat="server" ID="upi">
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="rdbSelectedMainCategory" />
                </Triggers>
                <ContentTemplate>
                    <div class="rounded_corners">
                        <asp:GridView ID="gridSubCategory1" Width="100%" HeaderStyle-BackColor="#3AC0F2"
                            HeaderStyle-ForeColor="White" RowStyle-BackColor="White" RowStyle-ForeColor="#3A3A3A" runat="server"
                            AutoGenerateColumns="False" BorderWidth="1px" OnPageIndexChanging="gridSubCategory1_PageIndexChanging"
                            ClientIDMode="Static" ShowHeaderWhenEmpty="True"
                            AllowPaging="True">
                            <Columns>
                                <asp:TemplateField>
                                    <ItemTemplate>
                                        <asp:RadioButton runat="server" ID="rdbSelectedSubCategory1" Width="50" GroupName="B" />
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:BoundField HeaderText="Main Category Id" DataField="cat_id" Visible="false">
                                    <HeaderStyle Width="5%"></HeaderStyle>
                                </asp:BoundField>
                                <asp:BoundField HeaderText="Name (Eng)" DataField="cat_name_eng" ReadOnly="true">
                                    <HeaderStyle Width="40%"></HeaderStyle>
                                </asp:BoundField>
                                <asp:BoundField HeaderText="Name (Sin)" DataField="cat_name_sin" ReadOnly="true">
                                    <HeaderStyle Width="40%"></HeaderStyle>
                                </asp:BoundField>
                                <asp:BoundField HeaderText="Active Status" DataField="cat_active_status" ReadOnly="true">
                                    <HeaderStyle Width="5%"></HeaderStyle>
                                </asp:BoundField>
                                <asp:BoundField HeaderText="Order No" DataField="cat_order_no" ReadOnly="true">
                                    <HeaderStyle Width="10%" />
                                </asp:BoundField>
                                <asp:CommandField ShowEditButton="True" ButtonType="Image" EditImageUrl="~/images/edit.png" ShowCancelButton="False">
                                    <HeaderStyle Width="100px" />
                                </asp:CommandField>
                            </Columns>

                            <HeaderStyle BackColor="Gray" ForeColor="White" Height="40px"></HeaderStyle>

                            <RowStyle Height="20px"></RowStyle>
                        </asp:GridView>
                    </div>
                </ContentTemplate>
            </asp:UpdatePanel>

精细。但是当我尝试调试这个错误消息显示时，我就是探测器。

在UpdatePanel'upi'中找不到ID为“rdbSelectedMainCategory”的控件。 异常详细信息：System.InvalidOperationException：在UpdatePanel'updi'中找不到触发器ID为“rdbSelectedMainCategory”的控件。

第二个更新面板的触发器无法识别项目模板中的单选按钮。 怎么解决这个？