电子邮件代码不起作用

Question

以下是我发送邮件的代码，它显示错误

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    System.Web.Mail.MailMessage mail = new System.Web.Mail.MailMessage();
    mail.To = "hsbanga@yahoo.com";
    mail.From = "hsbanga@yahoo.com";
    mail.Subject = "Query from agnihotrindt";

    mail.Body = "Name : " + TextBox1.Text + "<br/>" + "Email: " + TextBox2.Text + "<br/>Contact :" + TextBox3.Text + "<br/><br/><b>Address:</b><br/>" + TextBox4.Text + "<br/><b>Comment:</b><br/>" + TextBox5.Text ;
    mail.BodyFormat = System.Web.Mail.MailFormat.Html;

    mail.Fields["http://schemas.microsoft.com/cdo/configuration/smtpserverport"] = 25;
    mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendusing"] = 2;
    mail.Fields["http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"] = 1;
    mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendusername"] = "hsbanga@yahoo.com";
    mail.Fields["http://schemas.microsoft.com/cdo/configuration/sendpassword"] = "secret";
    mail.Fields["http://schemas.microsoft.com/cdo/configuration/smtpusessl"] = "false";

    System.Web.Mail.SmtpMail.SmtpServer = "smtp.mail.yahoo.com";
    System.Web.Mail.SmtpMail.Send(mail);

Answer 1

Use：

SmtpClient emailClient = new SmtpClient("smtp.mail.yahoo.com");
System.Net.NetworkCredential SMTPUserInfo = new System.Net.NetworkCredential("xyz@yahoo.com","*******"); 
emailClient.EnableSsl = true;
emailClient.Credentials = SMTPUserInfo;
emailClient.Port = 465;

MailMessage message = new System.Net.Mail.MailMessage("xyz@gmail.com", "someone@something.something", "fire!!", "Call up 911 and inform my house is on fire and my phone too");
emailClient.Send(message);

Answer 2

首先，您使用的是哪个版本的 .NET？如果我没记错的话，System.Web.Mail 在 .NET 3.5 中已被弃用。建议使用 System.Net.Mail 命名空间。

至于发送带有凭据的邮件，我没有 C# 代码作为示例，因为我将所有邮件配置添加到 system.net 元素中的 web.config 中。下面是一个如何查找 Yahoo 的示例。

<system.net>
  <mailSettings>
    <smtp deliveryMethod="Network">
      <network host="smtp.mail.yahoo.com" port="465" userName="xyz@yahoo.com" password="*****" enableSsl="true" defaultCredentials="false" />
    </smtp>
  </mailSettings>
</system.net>

这还允许更改邮件配置，而无需在每次更改密码时重新编译您的应用程序。然后，您可以像这样实例化您的 SmtpClient：

var client = new SmtpClient();
client.Send(mailMessage);

Answer 3

你可以用这个：

SmtpClient smtpClient = new SmtpClient("smtp.mail.yahoo.com", 465);
smtpClient.Credentials = new System.Net.NetworkCredential("hsbanga@yahoo.com", "secret");
smtpClient.EnableSsl = true;
smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
MailMessage mail = new MailMessage();

smtpClient.Send(mail);