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create and send Email[1]using System.Net.Mail;
using System.IO;
public static CreateAndSendMessage(...)
{
var file = "data.xls";
// create the message
using(var message = new MailMessage(from, to, subject, body))
{
message.IsBodyHtml = true;
message.BodyEncoding = Encoding.UTF8;
message.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
// create attachment
using(var attachment = new Attachment(file, MediaTypeNames.Application.Octet))
{
var disposition = attachment.ContentDisposition;
disposition.CreationDate = File.GetCreationTime(file);
disposition.ModificationDate = File.GetLastWriteTime(file);
disposition.ReadDate = File.GetLastAccessTime(file);
message.Attachments.Add(attachment);
// send the message.
var smtpServerName = ConfigurationManager.AppSettings["smtpServer"];
var port = int.Parse(ConfigurationManager.AppSettings["smtpPort"]);
var useSsl = bool.Parse(ConfigurationManager.AppSettings["smtpSSL"]);
using(var client = new SmtpClient(server, port))
{
client.EnableSsl = useSsl;
// customCredentials
client.UseDefaultCredentials = false;
client.Credentials = CredentialCache.DefaultNetworkCredentials; // new NetworkCredential(@"DOMAIN\USER", "PASSWORD");
//// DON'T: ignore invalid certificate
// ServicePointManager.ServerCertificateValidationCallback = (object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) => true;
client.Send(message);
}
}
}
}
Inline Imageusing (var client = new SmtpClient())
{
MailMessage newMail = new MailMessage();
newMail.To.Add(new MailAddress("you@your.address"));
newMail.Subject = "Test Subject";
newMail.IsBodyHtml = true;
var inlineLogo = new LinkedResource(Server.MapPath("~/Path/To/YourImage.png"));
inlineLogo.ContentId = Guid.NewGuid().ToString();
string body = string.Format(@"<img src=""cid:{0}"" />", inlineLogo.ContentId);
var view = AlternateView.CreateAlternateViewFromString(body, null, "text/html");
view.LinkedResources.Add(inlineLogo);
newMail.AlternateViews.Add(view);
client.Send(newMail);
}
app.config / web.configDer Server kann deklarativ konfiguriert werden:[2] <configuration>
<system.net>
<mailSettings>
<!-- configure SMTP server -->
<smtp deliveryMethod="network">
<network host="localhost" port="25" defaultCredentials="true" />
</smtp>
<!-- use SSL; use custom credentials -->
<!--
<smtp deliveryMethod="network">
<network host="localhost" port="465" defaultCredentials="false" enableSsl="true" />
</smtp>
-->
<!-- deliver mails to File System -->
<!--
<smtp deliveryMethod="SpecifiedPickupDirectory">
<specifiedPickupDirectory pickupDirectoryLocation="c:\foo\emails\" />
</smtp>
-->
</mailSettings>
</system.net>
</configuration>
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