C# 使用asp.net web表单保存数据后从代码隐藏中显示ModalPopupExtender1

问题现在解决了

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

我有一个简单的web表单，我需要保存电子邮件地址，并在模式窗口中相应地给出用户成功或失败的消息，我想从代码隐藏中进行验证和处理，然后显示模式窗口

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

现在，当我单击subscribe按钮时，它会快速显示模式窗口，而不执行codebehind/服务器端代码。请在下面找到示例代码

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

我试图从ModalPopupXtender中删除TargetControlID=“btnSubscribe”属性，但它会生成错误，说明TargetControlID不能为null或空，即使删除TargetControlID也会生成错误

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

如果我使用hidden字段作为TargetControl id，那么它会执行codebehin，但它会执行完整的回发，并且不会显示modalwindow

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

请建议如何使用此功能

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

---

我做了什么？我通过将targetControl指定为隐藏字段解决了这个问题，并且还使用了response.redirect，因为我错误地将它保留为未注释状态。它现在工作正常

问题已解决

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

---

我做了什么？我通过将targetControl指定为隐藏字段解决了这个问题，并且还使用了response.redirect，因为我错误地将它保留为未注释状态。它现在工作正常了

很高兴你的问题解决了。请注意

                <asp:Label ID="lblSubscriptionText" CssClass="lblfooterSubscribe" 
                    runat="server" Text="Enter your email to subscribe to our Newsletter" 
                    meta:resourcekey="lblSubscriptionTextResource1"></asp:Label>
                <asp:TextBox ID="txtSubscribeEmail" runat="server" CssClass="txtSubEmail" 
                    meta:resourcekey="txtSubscribeEmailResource1"></asp:TextBox>
                <asp:Button ID="btnSubscribe" runat="server" Text="Subscribe" 
                    CssClass="SubEmailBtn" ValidationGroup="SubEmail" 
                    onclick="btnSubscribe_Click" meta:resourcekey="btnSubscribeResource1" />

        <asp:HiddenField ID="HiddenField1" runat="server" />  

仅仅显示一条模态消息似乎需要做很多工作。您可能希望尝试并查看一下[JQModal]，它对于您的需求来说相当容易

您当前的代码受到SQL注入攻击。为了安全起见，请尽可能使用参数化查询