在我的系统中,我需要发送大量电子邮件。但是,如果我等待发送所有电子邮件,页面会变得太慢。我曾尝试创建一个异步类 - 但是,在发送电子邮件之前,类会启动并死掉。
public class NotificationManager
{
public void SendNotification(NotificationData data)
{
data.MailTo = new WorkflowManager().GetEmailNotification((StatusType)data.Issue.StatusID, data.Issue.IssueId);
Task.Factory.StartNew(() =>
{
new MailManager().SendMessage(data);
});
}
}
class MailManager
{
static ILog log = log4net.LogManager.GetLogger(typeof(MailManager));
public static void SendMessage(Models.Extensions.NotificationData data)
{
var domain = string.Format("{0}/{1}", HttpContext.Current.Request.Url.AbsoluteUri.Replace("Edit", "IssueDetail"), data.Issue.IssueCode);
string type = new TypeManager().GetTypeById(data.Issue.IssueTypeID).Name;
string status = new StatusManager().GetStatusById(data.Issue.IssueTypeID).Name;
var body = string.Format("<h2>[{3}]</h2><br/>{0}<br/><br/><a href='{1}'>Issue</a><br/>[Ticket Number: {2}]",
data.Issue.Description, domain, data.Issue.IssueCode, type);
var subject = string.Format("[{0}] {1}", status, data.Issue.Summary);
SendEmailAwaitable(data.MailTo, subject, body);
log.Error("End Send Email Async");
}
private async Task<bool> SendEmailAwaitable(List<MailAddress> To, string Subject, string Body, bool isBodyHtml = true)
{
Settings s = new Settings();
MailMessage message = new MailMessage();
MailAddress fromAddress = new MailAddress(s.Email, s.EmailDisplayName);
SmtpClient smtpClient = new SmtpClient();
NetworkCredential basicCredential = new NetworkCredential(s.EmailUserName, s.EmailPassword);
string userToken = Subject;
smtpClient.Host = s.EmailServer;
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = basicCredential;
message.From = fromAddress;
message.Subject = Subject;
message.IsBodyHtml = isBodyHtml;
message.Body = Body;
foreach (var item in To)
{
userToken += ":To: " + item.Address;
message.To.Add(item);
}
smtpClient.SendCompleted += smtpClient_SendCompleted;
smtpClient.SendAsync(message, null);
await Task.Yield();
return true;
}