//---------------------------------------------------------------------------------------------------------------------
public bool Send(string subject, string body, List <string> to, List <string> cc, List <string> bcc, string contentType)
{
string smtpHostname = context.GetConfigValue("SmtpHostname");
string smtpUsername = context.GetConfigValue("SmtpUsername");
if (smtpUsername == String.Empty)
{
smtpUsername = null;
}
string smtpPassword = context.GetConfigValue("SmtpPassword");
if (smtpPassword == String.Empty)
{
smtpPassword = null;
}
string mailSenderAddress = context.GetConfigValue("MailSenderAddress");
string mailSender = context.GetConfigValue("MailSender");
if (mailSender == null)
{
mailSender = mailSenderAddress;
}
if (smtpHostname == null || mailSenderAddress == null)
{
string message = String.Format("Invalid mailing settings: smtpHostname = {0}\tsmtpUsername = {1}\t,mailSenderAddress = {2}", smtpHostname, smtpUsername, mailSenderAddress);
context.LogError(this, message);
throw new ArgumentNullException(message);
}
// create the mail and setting parameters
MailMessage mail = new MailMessage();
mail.Body = body;
mail.Subject = subject;
mail.From = new MailAddress(mailSenderAddress, mailSender);
// Add main recipients
foreach (string recipient in to)
{
mail.To.Add(new MailAddress(recipient, recipient));
}
// Add CC recipients
if (cc != null)
{
foreach (string recipient in cc)
{
mail.CC.Add(new MailAddress(recipient, recipient));
}
}
// Add BCC recipients
if (bcc != null)
{
foreach (string recipient in bcc)
{
mail.Bcc.Add(new MailAddress(recipient, recipient));
}
}
SmtpClient client = new SmtpClient(smtpHostname);
// Add credentials if the SMTP server requires them
if (smtpUsername != null || smtpPassword != null)
{
client.Credentials = new System.Net.NetworkCredential(smtpUsername, smtpPassword);
}
// Add alternate view if content type is defined
if (contentType != null)
{
AlternateView alternateView = AlternateView.CreateAlternateViewFromString(body, new ContentType(contentType));
mail.AlternateViews.Add(alternateView);
}
try {
client.Send(mail);
return(true);
} catch (Exception e) {
string message;
if (e.Message.Contains("CDO.Message") || e.Message.Contains("535"))
{
message = "Mail could not be sent, this is a site administration issue (probably caused by an invalid SMTP hostname or wrong SMTP server credentials)";
}
else
{
message = String.Format("Mail could not be sent, this is a site administration issue: {0}{1}", e.Message, e.InnerException == null ? String.Empty : String.Format("({0})", e.InnerException.Message));
}
context.AddError(message);
context.LogError(this, message);
throw;
}
}