我已经为Asp.Net Identity 2.0实施了一个简单的EmailService(通过IIdentityMessageService
界面。
public class EmailService : IIdentityMessageService
{
public Task SendAsync(IdentityMessage message)
{
// convert IdentityMessage to a MailMessage
var email =
new MailMessage(new MailAddress("noreply@mydomain.com", "(do not reply)"),
new MailAddress(message.Destination))
{
Subject = message.Subject,
Body = message.Body,
IsBodyHtml = true
};
using (var client = new SmtpClient()) // SmtpClient configuration comes from config file
{
return client.SendMailAsync(email);
}
}
}
要发送电子邮件,我会通过UserManager:
await _userManager.SendEmailAsync(user.Id, "Confirm your account","Please confirm your account by clicking this link: <a href=\"" + callbackUrl + "\">link</a>");
问题在于,当我致电System.Threading.Tasks.TaskCanceledException
时,我收到了SendEmailAsync()
,而且不清楚原因。
如果我同步发送电子邮件(client.Send(email)
),一切正常。
所以我的问题是:
如何防止抛出TaskCanceledException? (假设我能克服这个错误),
我应该如何在电子邮件发送回客户端时传达错误(例如,&#34;此处没有此类用户&#34;从SmtpClient输入回复?
答案 0 :(得分:30)
您的问题是在发送电子邮件之前处理了SmtpClient
。
两种方式:
等待SendMailAsync
结果
using (var client = new SmtpClient())
{
await client.SendMailAsync(email);
}
注册SendCompleted
事件并仅在发送邮件后处理SmtpClient
var client = new SmtpClient();
client.SendCompleted += (s, e) => {
client.Dispose();
};
return client.SendMailAsync(message);
答案 1 :(得分:6)
您必须在方法上设置异步。
public async Task SendAsync(IdentityMessage message)
{
using (SmtpClient client = new SmtpClient())
{
using (var mailMessage = new MailMessage("your@email.com", message.Destination, message.Subject, message.Body))
{
await client.SendMailAsync(mailMessage);
}
}
}
}