我正在尝试在Windows应用程序中使用gmail的用户名和密码发送电子邮件。但是,下面的代码只向第一个电子邮件地址发送电子邮件,而我在StringBuilder实例中收集了多个电子邮件地址。
我做错了什么,我该如何解决我的问题?
var fromAddress = new MailAddress(username, DefaultSender);
var toAddress = new MailAddress(builder.ToString());//builder reference having multiple email address
string subject = txtSubject.Text;
string body = txtBody.Text; ;
var smtp = new SmtpClient
{
Host = HostName,
Port = 587,
EnableSsl = true,
DeliveryMethod = SmtpDeliveryMethod.Network,
UseDefaultCredentials = false,
Credentials = new NetworkCredential(username, password),
//Timeout = 1000000
};
var message = new MailMessage(fromAddress, toAddress)
{
Subject = subject,
Body = body,
IsBodyHtml = chkHtmlBody.Checked
};
if (System.IO.File.Exists(txtAttechments.Text))
{
System.Net.Mail.Attachment attechment = new Attachment(txtAttechments.Text);
message.Attachments.Add(attechment);
}
if(this.Enabled)
this.Enabled = false;
smtp.Send(message);
我做错了什么,我该如何解决我的问题?