在使用 SendMailAsync 时出现以下错误:

An asynchronous module or handler completed while an asynchronous operation was still pending

我的代码:

public static async Task SendEmail(MessageContent messageContent, string emailBody)
{
   SmtpClient smtpClientNoSend = new SmtpClient();
   await smtpClientNoSend.SendMailAsync(mailMessage);
}

来自 Controller 的调用:

public async System.Threading.Tasks.Task<ActionResult> Register()
{
   await SendEmail();
}

private void SendEmail()
{
  SMTPEmail.SendEmail(msg, output.ToString());
  return null;
}

最佳答案

您的调用层次结构已损坏。您不应该使用 async void，它仅用于事件处理程序，而应使用 async Task:

public static Task SendEmailAsync(MessageContent messageContent, string emailBody)
{
   SmtpClient smtpClientNoSend = new SmtpClient();
   return smtpClientNoSend.SendMailAsync(mailMessage);
}

public async Task<ActionResult> Register()
{
   await SendEmailAsync();
}

private Task SendEmailAsync()
{
   return SMTPEmail.SendEmailAsync(msg, output.ToString());
}

旁注 - 我不确定为什么你有这么多 SendMail 方法，你可以将它们缩小到单个方法调用。

关于c# - 发送邮件异步 : An asynchronous module or handler completed while an asynchronous operation was still pending，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30306596/