Question

我开发了两种方法：分别使用SmtpClient.Send和SmtpClient.SendMailAsync的SendEmailBySmtp（）和SendEmailAsyncBySmtp（）。
当前第一种方法有效，但第二种无效。没有错误，但是没有电子邮件。
我该如何解决？

class Program
{
    static void Main(string[] args)
    {
        SendEmailBySmtp();
        SendEmailAsyncBySmtp();
    }

    static void SendEmailBySmtp()
    {
        MailMessage message = new MailMessage() 
        { 
            From = new MailAddress("test@example.com", "Test User"), 
            Subject = "Subject", 
            Body = "Body"
        };
        message.To.Add("test@example.com");
        message.CC.Add("test@example.com");
        message.BodyEncoding = UTF8Encoding.UTF8;
        message.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
        using (SmtpClient client = new SmtpClient())
        {
            client.Port = 587;
            client.Host = "smtp.office365.com";
            client.EnableSsl = true;
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential("test@example.com", "password");
            client.Send(message);
        }
    }

    static async Task SendEmailAsyncBySmtp()
    {
        MailMessage message = new MailMessage()
        {
            From = new MailAddress("test@example.com", "Test User"),
            Subject = "Subject",
            Body = "Body"
        };
        message.To.Add("test@example.com");
        message.CC.Add("test@example.com");
        message.BodyEncoding = UTF8Encoding.UTF8;
        message.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
        using (SmtpClient client = new SmtpClient())
        {
            client.Port = 587;
            client.Host = "smtp.office365.com";
            client.EnableSsl = true;
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential("test@example.com", "password");
            await client.SendMailAsync(message);
        }
    }
}

Answer 1

问题出在select方法中，您忘记等待第二个调用。因为在主要方法中不能使用await关键字，所以必须手动“等待”线程

只需执行以下操作：

<div data-bind="with: SelectedItem">
  <select id="select" data-bind="options: $root.OptionsList, optionsText: 'description', optionsValue: 'opt_id', optionsCaption: 'Select', value: $root.selectedOption"></select>
</div>

您的问题的答案是：该程序在Main执行该工作之前结束，因此电子邮件发送操作在发送之前已停止。

SmtpClient.Send工作正常，但SmtpClient.SendMailAsync在smtp.office365.com上不工作

1 个答案: