send Email without waiting for the action to finish execution

Question

i am trying to avoid the wait time, taken by sending an email before exiting page.

the page/application is doing a sequence of actions before exiting as follows :

database interaction
Send Email (updates a manager about that transaction)
Exit page / application .

code behind function :

    ExecEntryOnTbl(SQL);// <-- update / insert to database 
    sendMailNote(action);// <-- send mail with notification of update 

    exitTC(action, custid);<-- exit page.

    done via javascript :
    window.location.href = "someOtherPage.aspx"
    from code behind via 
    RegisterClientScriptBlock(...)

i would like to solve the issue :

how can i avoid waiting for the sendMailNote() to complete before following exitTC() could be executed. is that possible ?

update email class/method

public static class mail
{
    public static string aReciver, bSubject, cBody;
    public static void sendMailNoteExc()
    {

        string SmtpServer = "smtp.gmail.com";
        int port = 111;
        string sender = "aaa@bbb.com";
        string ReCiver = aReciver;
        string Subject = bSubject;
        string Body = cBody;
        string account = "acc@domain.com";
        string Pass = "a123456";
        Send(SmtpServer, port, account, Pass, sender, ReCiver, Subject, Body);

    }
    public static void Send(string smtpServer,int Port,string Account, string PassWord, string From, string To, string Subject, string Body)
    {

        MailMessage mail = new MailMessage();
        SmtpClient SmtpServer = new SmtpClient(smtpServer);

        mail.From = new MailAddress(From);
        mail.To.Add(To);
        mail.Subject = Subject;
        mail.Body = Body;


        SmtpServer.Port = Port;
        SmtpServer.Credentials = new System.Net.NetworkCredential(Account, PassWord);
        SmtpServer.EnableSsl = true;

        SmtpServer.Send(mail);


    }
}

score 3 · Accepted Answer · answered Oct 17 '12 at 18:50

3

As long as you are using C# 4.0 you can take advantage of Task Parallel Library and run sendMailNote(action) in the background thread like this:

Task.Factory.StartNew(() => sendMailNote(action));

Just make sure you add a code to handle any exceptions occured during sending an email. However the better solution would be to remove this logic from the user interface code altogether and execute it in a background task like windows service or cloud worker role.

answered Oct 17 '12 at 18:50

Sergey Rybalkin

3,004
22
26

did you see last answer `@Ehsan Aleem Avee` is it necessary to specify tasks properties inorder for them to act as specified? – LoneXcoder Oct 17 '12 at 19:04
or is this totally different class /methods he is using ? – LoneXcoder Oct 17 '12 at 19:06
The idea behind both answers is the same, but he is using a more low level API to use a background thread. If you are able to use TPL then I suggest you to do so as it is easier to use and will work faster as it is using .NET Framework thread pool instead of creating a new thread. – Sergey Rybalkin Oct 17 '12 at 21:46

score 2 · Answer 2 · answered Oct 17 '12 at 18:55

2

Do it in another thread. as a result your main thread will not wait for email sending.

ExecEntryOnTbl(SQL);// <-- update / insert to database 

ThreadStart sendMail = delegate()
{
    sendMailNote(action)
};

Thread thread = new Thread(sendMail );
thread.IsBackground = true;
thread.Start();

exitTC(action, custid);<-- exit page.

done via javascript :
window.location.href = "someOtherPage.aspx"
from code behind via 
RegisterClientScriptBlock(...)

answered Oct 17 '12 at 18:55

Ehsan Aleem Avee

231
1
4

thanks , is there any difference to the answer that i've accepted as correct (it simply works ) your code tries setting thread properties... etc or did you not take into account the use of availble `Task parallel` when using c#4.0 – LoneXcoder Oct 17 '12 at 20:04
I do not have knowledge of Task.Factory.StartNew functionality. But i think it also creates a new thread to accomplish job in asynchrnous way.. – Ehsan Aleem Avee Oct 18 '12 at 04:45

score 0 · Answer 3 · answered Oct 17 '12 at 18:49

0

You can persist the email info to a database, and have a background cron job that actually sends the mail.

answered Oct 17 '12 at 18:49

D'Arcy Rittich

167,292
40
290
283

can u please give a short example on how do you do it ? i will show you the actuall send mail function i am using , sound interesting (updating post) – LoneXcoder Oct 17 '12 at 18:54

send Email without waiting for the action to finish execution

3 Answers3

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