private static void SmtpClient_SendCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
{
// Get the DTOMailMessage object
DTOMailMessage objDTOMailMessage = (DTOMailMessage)e.UserState;
System.Net.Mail.SmtpClient objSmtpClient = (System.Net.Mail.SmtpClient)sender;
// Get MailMessage
System.Net.Mail.MailMessage objMailMessage = objDTOMailMessage.MailMessage;
if (e.Error != null)
{
// Log to the System Log
Log.InsertSystemLog(
objDTOMailMessage.DefaultConnection,
Constants.EmailError, "",
$"Error: {e.Error.GetBaseException().Message} - To: {objMailMessage.To} Subject: {objMailMessage.Subject}");
}
else
{
// Log the Email
LogEmail(objDTOMailMessage.DefaultConnection, objMailMessage);
objMailMessage.Dispose();
objSmtpClient.Dispose();
}
}
private static string SendMail(bool SendAsync, string DefaultConnection, string MailFrom, string MailTo, string MailToDisplayName, string Cc, string Bcc, string ReplyTo, string Header, System.Net.Mail.MailPriority Priority,
string Subject, Encoding BodyEncoding, string Body, string[] Attachment, string SMTPServer, string SMTPAuthentication, string SMTPUsername, string SMTPPassword, bool SMTPEnableSSL)
{
string strSendMail = "";
GeneralSettings GeneralSettings = new GeneralSettings(DefaultConnection);
// SMTP server configuration
if (SMTPServer == "")
{
SMTPServer = GeneralSettings.SMTPServer;
if (SMTPServer.Trim().Length == 0)
{
return("Error: Cannot send email - SMTPServer not set");
}
}
if (SMTPAuthentication == "")
{
SMTPAuthentication = GeneralSettings.SMTPAuthendication;
}
if (SMTPUsername == "")
{
SMTPUsername = GeneralSettings.SMTPUserName;
}
if (SMTPPassword == "")
{
SMTPPassword = GeneralSettings.SMTPPassword;
}
MailTo = MailTo.Replace(";", ",");
Cc = Cc.Replace(";", ",");
Bcc = Bcc.Replace(";", ",");
System.Net.Mail.MailMessage objMail = null;
try
{
System.Net.Mail.MailAddress SenderMailAddress = new System.Net.Mail.MailAddress(MailFrom, MailFrom);
System.Net.Mail.MailAddress RecipientMailAddress = new System.Net.Mail.MailAddress(MailTo, MailToDisplayName);
objMail = new System.Net.Mail.MailMessage(SenderMailAddress, RecipientMailAddress);
if (Cc != "")
{
objMail.CC.Add(Cc);
}
if (Bcc != "")
{
objMail.Bcc.Add(Bcc);
}
if (ReplyTo != string.Empty)
{
objMail.ReplyToList.Add(new System.Net.Mail.MailAddress(ReplyTo));
}
objMail.Priority = (System.Net.Mail.MailPriority)Priority;
objMail.IsBodyHtml = IsHTMLMail(Body);
objMail.Headers.Add("In-Reply-To", $"ADefHelpDesk-{Header}");
foreach (string myAtt in Attachment)
{
if (myAtt != "")
{
objMail.Attachments.Add(new System.Net.Mail.Attachment(myAtt));
}
}
// message
objMail.SubjectEncoding = BodyEncoding;
objMail.Subject = Subject.Trim();
objMail.BodyEncoding = BodyEncoding;
System.Net.Mail.AlternateView PlainView =
System.Net.Mail.AlternateView.CreateAlternateViewFromString(Utility.ConvertToText(Body),
null, "text/plain");
objMail.AlternateViews.Add(PlainView);
//if body contains html, add html part
if (IsHTMLMail(Body))
{
System.Net.Mail.AlternateView HTMLView =
System.Net.Mail.AlternateView.CreateAlternateViewFromString(Body, null, "text/html");
objMail.AlternateViews.Add(HTMLView);
}
}
catch (Exception objException)
{
// Problem creating Mail Object
strSendMail = MailTo + ": " + objException.Message;
// Log Error to the System Log
Log.InsertSystemLog(DefaultConnection, Constants.EmailError, "", strSendMail);
}
if (objMail != null)
{
// external SMTP server alternate port
int?SmtpPort = null;
int portPos = SMTPServer.IndexOf(":");
if (portPos > -1)
{
SmtpPort = Int32.Parse(SMTPServer.Substring(portPos + 1, SMTPServer.Length - portPos - 1));
SMTPServer = SMTPServer.Substring(0, portPos);
}
System.Net.Mail.SmtpClient smtpClient = new System.Net.Mail.SmtpClient();
if (SMTPServer != "")
{
smtpClient.Host = SMTPServer;
smtpClient.Port = (SmtpPort == null) ? (int)25 : (Convert.ToInt32(SmtpPort));
switch (SMTPAuthentication)
{
case "":
case "0":
// anonymous
break;
case "1":
// basic
if (SMTPUsername != "" & SMTPPassword != "")
{
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = new System.Net.NetworkCredential(SMTPUsername, SMTPPassword);
}
break;
case "2":
// NTLM
smtpClient.UseDefaultCredentials = true;
break;
}
}
smtpClient.EnableSsl = SMTPEnableSSL;
try
{
if (SendAsync) // Send Email using SendAsync
{
// Set the method that is called back when the send operation ends.
smtpClient.SendCompleted += SmtpClient_SendCompleted;
// Send the email
DTOMailMessage objDTOMailMessage = new DTOMailMessage();
objDTOMailMessage.DefaultConnection = DefaultConnection;
objDTOMailMessage.MailMessage = objMail;
smtpClient.SendAsync(objMail, objDTOMailMessage);
strSendMail = "";
}
else // Send email and wait for response
{
smtpClient.Send(objMail);
strSendMail = "";
// Log the Email
LogEmail(DefaultConnection, objMail);
objMail.Dispose();
smtpClient.Dispose();
}
}
catch (Exception objException)
{
// mail configuration problem
if (!(objException.InnerException == null))
{
strSendMail = string.Concat(objException.Message, Environment.NewLine, objException.InnerException.Message);
}
else
{
strSendMail = objException.Message;
}
// Log Error to the System Log
Log.InsertSystemLog(DefaultConnection, Constants.EmailError, "", strSendMail);
}
}
return(strSendMail);
}
