我有一个C#应用程序,它使用SMTP通过Exchange 2007服务器通过电子邮件发送Excel电子表格报告。这些适用于Outlook用户,但对于Thunderbird和Blackberry用户,附件已重命名为“第1.2部分”。
我发现这个article描述了这个问题,但似乎没有给我一个解决方法。我无法控制Exchange服务器,因此无法在那里进行更改。我能在C#端做什么吗?我尝试过对身体使用短文件名和HTML编码,但两者都没有区别。
我的邮件发送代码就是这样:
public static void SendMail(string recipient, string subject, string body, string attachmentFilename)
{
SmtpClient smtpClient = new SmtpClient();
NetworkCredential basicCredential = new NetworkCredential(MailConst.Username, MailConst.Password);
MailMessage message = new MailMessage();
MailAddress fromAddress = new MailAddress(MailConst.Username);
// setup up the host, increase the timeout to 5 minutes
smtpClient.Host = MailConst.SmtpServer;
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = basicCredential;
smtpClient.Timeout = (60 * 5 * 1000);
message.From = fromAddress;
message.Subject = subject;
message.IsBodyHtml = false;
message.Body = body;
message.To.Add(recipient);
if (attachmentFilename != null)
message.Attachments.Add(new Attachment(attachmentFilename));
smtpClient.Send(message);
}
谢谢你的帮助。
发送带附件的电子邮件的简单代码。
来源:http://www.coding-issues.com/2012/11/sending-email-with-attachments-from-c.html
using System.Net;
using System.Net.Mail;
public void email_send()
{
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress("your [email protected]");
mail.To.Add("[email protected]");
mail.Subject = "Test Mail - 1";
mail.Body = "mail with attachment";
System.Net.Mail.Attachment attachment;
attachment = new System.Net.Mail.Attachment("c:/textfile.txt");
mail.Attachments.Add(attachment);
SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential("your [email protected]", "your password");
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
}
明确填写ContentDisposition字段就可以了。
if (attachmentFilename != null)
{
Attachment attachment = new Attachment(attachmentFilename, MediaTypeNames.Application.Octet);
ContentDisposition disposition = attachment.ContentDisposition;
disposition.CreationDate = File.GetCreationTime(attachmentFilename);
disposition.ModificationDate = File.GetLastWriteTime(attachmentFilename);
disposition.ReadDate = File.GetLastAccessTime(attachmentFilename);
disposition.FileName = Path.GetFileName(attachmentFilename);
disposition.Size = new FileInfo(attachmentFilename).Length;
disposition.DispositionType = DispositionTypeNames.Attachment;
message.Attachments.Add(attachment);
}
顺便说一句,对于Gmail,你可能有一些关于ssl安全甚至端口的例外!
smtpClient.EnableSsl = true;
smtpClient.Port = 587;
这是一个带附件的简单邮件发送代码
try
{
SmtpClient mailServer = new SmtpClient("smtp.gmail.com", 587);
mailServer.EnableSsl = true;
mailServer.Credentials = new System.Net.NetworkCredential("[email protected]", "mypassword");
string from = "[email protected]";
string to = "[email protected]";
MailMessage msg = new MailMessage(from, to);
msg.Subject = "Enter the subject here";
msg.Body = "The message goes here.";
msg.Attachments.Add(new Attachment("D:\\myfile.txt"));
mailServer.Send(msg);
}
catch (Exception ex)
{
Console.WriteLine("Unable to send email. Error : " + ex);
}
完成Ranadheer的解决方案,使用Server.MapPath来定位文件
System.Net.Mail.Attachment attachment;
attachment = New System.Net.Mail.Attachment(Server.MapPath("~/App_Data/hello.pdf"));
mail.Attachments.Add(attachment);
private void btnSent_Click(object sender, EventArgs e)
{
try
{
MailMessage mail = new MailMessage();
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress(txtAcc.Text);
mail.To.Add(txtToAdd.Text);
mail.Subject = txtSub.Text;
mail.Body = txtContent.Text;
System.Net.Mail.Attachment attachment;
attachment = new System.Net.Mail.Attachment(txtAttachment.Text);
mail.Attachments.Add(attachment);
SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential(txtAcc.Text, txtPassword.Text);
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
MessageBox.Show("mail send");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void button1_Click(object sender, EventArgs e)
{
MailMessage mail = new MailMessage();
openFileDialog1.ShowDialog();
System.Net.Mail.Attachment attachment;
attachment = new System.Net.Mail.Attachment(openFileDialog1.FileName);
mail.Attachments.Add(attachment);
txtAttachment.Text =Convert.ToString (openFileDialog1.FileName);
}
试试这个:
private void btnAtt_Click(object sender, EventArgs e) {
openFileDialog1.ShowDialog();
Attachment myFile = new Attachment(openFileDialog1.FileName);
MyMsg.Attachments.Add(myFile);
}
我尝试了Ranadheer Reddy(上图)提供的代码,效果很好。如果您使用的是具有受限服务器的公司计算机,则可能需要将SMTP端口更改为25并将用户名和密码留空,因为它们将由管理员自动填写。
最初,我尝试使用来自nugent包管理器的EASendMail,只是意识到它是30天试用版的付费。除非你打算买它,否则不要浪费时间。我注意到程序使用EASendMail运行得更快,但对我来说,免费快速。
只需2美分。
我已经制作了一个简短的代码,我希望与您分享。
这里的主要代码:
public void Send(string from, string password, string to, string Message, string subject, string host, int port, string file)
{
MailMessage email = new MailMessage();
email.From = new MailAddress(from);
email.To.Add(to);
email.Subject = subject;
email.Body = Message;
SmtpClient smtp = new SmtpClient(host, port);
smtp.UseDefaultCredentials = false;
NetworkCredential nc = new NetworkCredential(from, password);
smtp.Credentials = nc;
smtp.EnableSsl = true;
email.IsBodyHtml = true;
email.Priority = MailPriority.Normal;
email.BodyEncoding = Encoding.UTF8;
if (file.Length > 0)
{
Attachment attachment;
attachment = new Attachment(file);
email.Attachments.Add(attachment);
}
// smtp.Send(email);
smtp.SendCompleted += new SendCompletedEventHandler(SendCompletedCallBack);
string userstate = "sending ...";
smtp.SendAsync(email, userstate);
}
private static void SendCompletedCallBack(object sender,AsyncCompletedEventArgs e) {
string result = "";
if (e.Cancelled)
{
MessageBox.Show(string.Format("{0} send canceled.", e.UserState),"Message",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
else if (e.Error != null)
{
MessageBox.Show(string.Format("{0} {1}", e.UserState, e.Error), "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else {
MessageBox.Show("your message is sended", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
在你的按钮做这样的事情 你可以添加你的jpg或pdf文件等等......这只是一个例子
using (OpenFileDialog attachement = new OpenFileDialog()
{
Filter = "Exel Client|*.png",
ValidateNames = true
})
{
if (attachement.ShowDialog() == DialogResult.OK)
{
Send("[email protected]", "gmail_password",
"[email protected]", "just smile ", "mail with attachement",
"smtp.gmail.com", 587, attachement.FileName);
}
}