SendMailAsync:异步模块或处理程序在异步操作尚未完成时完成。

While using SendMailAsync I am getting the following error:

在使用SendMailAsync时，我得到了以下错误:

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

在异步操作仍处于挂起状态时完成的异步模块或处理程序

My code :

我的代码:

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

Call From Controller:

电话控制器:

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

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

1 个解决方案

#1

Your call hierarchy is broken. You shouldn't use async void, that is ment for event handlers only, use async Task instead:

您的调用层次结构被破坏了。不应使用async void，即仅用于事件处理程序，而应使用async任务:

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());
}

Side note - I'm not sure why you have so many SendMail methods, You could narrow them down to a single method call.

边注-我不知道为什么您有这么多的SendMail方法，您可以将它们缩小到一个单一的方法调用。

#1