如果我的电子邮件地址格式不正确，我怎样才能让我的按钮不通过？

Question

我的电子邮件地址文本框中有必填字段验证器和正则表达式验证器。如果电子邮件没有价值或格式不正确，则会显示这两个验证器。但是，当我单击提交按钮并尝试在电子邮件文本框中输入错误的值（例如我输入数字 2）时，程序仍会通过提交按钮功能推送。在电子邮件文本框具有正确的格式（abc@yahoo.com）之前，是否有任何技巧或任何参考资料可以使按钮不继续？谢谢你的任何建议。 :)

这是我的电子邮件文本框代码：

<asp:TextBox ID="txtCustomerEmailID" runat="server" Width="231px"></asp:TextBox>
                                                                    <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" 
                                                                        ErrorMessage=" Email Address is Required." ForeColor="Red" ControlToValidate="txtCustomerEmailID"
                                                                        validationgroup="PersonalInfoGroup"
                                                                        ></asp:RequiredFieldValidator>

这是我的提交订单按钮

<asp:Button ID="btnPlaceOrder" runat="server" OnClick ="btnPlaceOrder_Click"
                                                                    Style = "font-weight:700" Text="PlaceOrder" Width="90px" validationgroup="PersonalInfoGroup" />

另外，我有电子邮件引擎，当我点击按钮时，它会被定向到电子邮件地址。我将显示电子邮件引擎的代码，因为当它使用错误的电子邮件地址推送时，错误会导致这里。

using (MailMessage mailMessage = new MailMessage())
        {
            mailMessage.From = new MailAddress(ConfigurationManager.AppSettings["Username"]);
            mailMessage.Subject = subject;
            mailMessage.Body = body;
            mailMessage.IsBodyHtml = true;
            mailMessage.To.Add(new MailAddress(recipientEmail));
            SmtpClient smtp = new SmtpClient();
            smtp.Host = ConfigurationManager.AppSettings["Host"];
            smtp.EnableSsl = Convert.ToBoolean(ConfigurationManager.AppSettings["EnableSsl"]);
            System.Net.NetworkCredential NetworkCred = new System.Net.NetworkCredential();
            NetworkCred.UserName = ConfigurationManager.AppSettings["UserName"];
            NetworkCred.Password = ConfigurationManager.AppSettings["Password"];
            smtp.UseDefaultCredentials = false;
            smtp.Credentials = NetworkCred;
            smtp.Port = int.Parse(ConfigurationManager.AppSettings["Port"]);
            smtp.Send(mailMessage);
        }

最后，错误：指定的字符串不是电子邮件地址所需的格式。

mailMessage.To.Add(new MailAddress(recipientEmail));

Answer 1

您必须更改文本框和按钮的验证组

<asp:TextBox ID="txtCustomerEmailID" runat="server" Width="231px" validationgroup="PersonalInfoGroup" ></asp:TextBox>
                                                                    <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" 
                                                                        ErrorMessage=" Email Address is Required." ForeColor="Red" ControlToValidate="txtCustomerEmailID"
                                                                        validationgroup="PersonalInfoGroup"
                                                                        >

<asp:Button ID="btnPlaceOrder" runat="server" OnClick ="btnPlaceOrder_Click"
                                                                    Style = "font-weight:700" Text="PlaceOrder" Width="90px" validationgroup="PersonalInfoGroup" />

Answer 2

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ErrorMessage="RegularExpressionValidator" ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"></asp:RegularExpressionValidator>

还需要RegularExpressionValidator

Answer 3

您可以通过这种方式重定向您的方法，

HTML

<asp:TextBox ID="txtCustomerEmailID" runat="server" Width="231px"></asp:TextBox>
<asp:RegularExpressionValidator ID="regexEmailValid" runat="server" ValidationExpression="\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*" ControlToValidate="txtCustomerEmailID" ErrorMessage="Invalid Email Format"></asp:RegularExpressionValidator>

隐藏代码：

if(txtCustomerEmailID!="")
{
   //Your Stuffs
}
else
{
   // Do some script to give alert or use label to make display the text as you wish
}

如果我的电子邮件地址格式不正确，我怎样才能让我的按钮不通过？

how can I make my button not to go through if my email address in not in the correct format?

c#

asp.net

textbox

email-validation