如何验证asp.net C＃中按钮单击的表达式(How to validate expression on button click in asp.net C#)

如何验证asp.net C＃中按钮单击的表达式(How to validate expression on button click in asp.net C#)

我正在创建一个网站，并且已经创建了一个表单字段，例如电子邮件字段和与其关联的验证表达式。 验证是在文本更改时启动的。 但我希望它执行“提交”按钮点击事件。 我已经搜索，但无法找到我的问题的解决方案。 请告诉我为什么会发生这种情况，我该如何解决这个问题。 我是这个网络开发领域的新手，所以需要你们的帮助。

提前致谢！！！

哈马德

I am making a website and I have made a form fields like email field and validation expressions associated with it. Validation is initiated on text change. But i want it t execute on "submit" button click event. I have searched but could not locate the solution to my problem. Please tel me why is this happening and how can i make it right. I am new to this web development field, So need help from you guys.

Thanks in advance!!!

Hamad

最满意答案

您可以禁用验证器本身显示错误，而是创建验证摘要，仅在您单击提交后才会显示验证摘要。

喜欢这个：

<asp:RequiredFieldValidator runat="server" ControlToValidate="txtEmail" ValidationGroup="vRegister" Display="None" ErrorMessage="Email field cannot be empty"></asp:RequiredFieldValidator>

然后声明一个验证摘要：

<asp:ValidationSummary runat="server" ID="vSummary" ValidationGroup="vRegister" DisplayMode="BulletList" />

You could disable showing errors in the validator itself and instead make a validation summary which will be shown only after you click submit.

Like this:

<asp:RequiredFieldValidator runat="server" ControlToValidate="txtEmail" ValidationGroup="vRegister" Display="None" ErrorMessage="Email field cannot be empty"></asp:RequiredFieldValidator>

and then declare a validation summary:

<asp:ValidationSummary runat="server" ID="vSummary" ValidationGroup="vRegister" DisplayMode="BulletList" />