How to Send Mail Async

Question

I am running into an issue when trying to send an Email Async, I found out a no of post on Stackoverflow but none of them was helpful. I have following block of code

public class EmailService : IIdentityMessageService
{
    public Task SendAsync(IdentityMessage message)
    {
        // Plug in your email service here to send an email.

        var mailMessage = new MailMessage
            ("[email protected]", message.Destination, message.Subject, message.Body);

        mailMessage.IsBodyHtml = true;

        var client = new SmtpClient();

        client.SendCompleted += (s, e) => client.Dispose();
        client.SendAsync(mailMessage,null);
        return Task.FromResult(0);
    }
}

I got an email but getting an exception when this block of code run

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

Any suggestion?

Answer 1

Use SendMailAsync instead of SendAsync:

public class EmailService : IIdentityMessageService
{
    public async Task SendAsync(IdentityMessage message)
    {
        // Plug in your email service here to send an email.

        var mailMessage = new MailMessage
            ("[email protected]", message.Destination, message.Subject, message.Body);

        mailMessage.IsBodyHtml = true;

        using(var client = new SmtpClient())
        {
            await client.SendMailAsync(mailMessage);
        }
    }
}