C # Three ways to implement sending messages

The examples in this article describe the three ways in which C # implements sending messages. Share to everyone for your reference. The specific methods are analyzed as follows:

First, the question:

Recently due to a r&i; project needs, user requirements in the purchase of products or shipments and other links, need to send an email alert or every Monday to let the system automatically collect data sent an e-mail, so I also find relevant information, wrote a demo to share to everyone, we learn together.

Second, the implementation of code:

The "System.Net.Mail" provided under the. Net FrameWork 2.0 can be easily implemented, and this article lists 3 ways to send:

1. through localhost;

2. through ordinary SMTP;

3. SMTP via SSL;

For one of the following:

The code is as follows:

public void Sendmaillocalhost ()

{

System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage ();

Msg. To.add ("[email protected]");

Msg. To.add ("[email protected]");

/* Msg. To.add ("[email protected]");

* Msg. To.add ("[email protected]");

* Msg. To.add ("[email protected]"), can be sent to more than one person

*/

Msg. Cc. ADD ([email protected]);

/*

* Msg. Cc. ADD ("[email protected]");

* Msg. Cc. ADD ("[email protected]"), can be copied to many people

*/

Msg. from = new MailAddress ("[Email protected]", "Alphawu", System.Text.Encoding.UTF8);

/* Above 3 parameters are sender address (can be written casually), sender name, code */

Msg. Subject = "This is a test message";//message header

Msg. subjectencoding = system.text.encoding.utf8;//message header encoding

Msg. Body = "Mail content";//message content

Msg. bodyencoding = system.text.encoding.utf8;//message content encoding

Msg. isbodyhtml = false;//is an HTML message

Msg. Priority = mailpriority.high;//Message Precedence

SmtpClient client = new SmtpClient ();

Client. Host = "localhost";

Object userState = msg;

Try

{

Client. SendAsync (msg, userState);

Simply a little bit can be client. Send (msg);

MessageBox.Show ("sent successfully");

}

catch (System.Net.Mail.SmtpException ex)

{

MessageBox.Show (ex. Message, "Error sending message");

}

}

public void Sendmaillocalhost ()

{

System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage ();

Msg. To.add ("[email protected]");

Msg. To.add ("[email protected]");

/* Msg. To.add ("[email protected]");

* Msg. To.add ("[email protected]");

* Msg. To.add ("[email protected]"), can be sent to more than one person

*/

Msg. Cc. ADD ([email protected]);

/*

* Msg. Cc. ADD ("[email protected]");

* Msg. Cc. ADD ("[email protected]"), can be copied to many people

*/

Msg. from = new MailAddress ([email protected], "Dulei", System.Text.Encoding.UTF8);

/* Above 3 parameters are sender address (can be written casually), sender name, code */

Msg. Subject = "This is a test message";//message header

Msg. subjectencoding = system.text.encoding.utf8;//message header encoding

Msg. Body = "Mail content";//message content

Msg. bodyencoding = system.text.encoding.utf8;//message content encoding

Msg. isbodyhtml = false;//is an HTML message

Msg. Priority = mailpriority.high;//Message Precedence

SmtpClient client = new SmtpClient ();

Client. Host = "localhost";

Object userState = msg;

Try

{

Client. SendAsync (msg, userState);

Simply a little bit can be client. Send (msg);

MessageBox.Show ("sent successfully");

}

catch (System.Net.Mail.SmtpException ex)

{

MessageBox.Show (ex. Message, "Error sending message");

}

}

2. Through the normal SMTP

C # code is as follows

The code is as follows:

public void Sendmailusezj ()

{

System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage ();

Msg. To.add ([email protected]);

Msg. To.add ([email protected]);

/*

* Msg. To.add ("[email protected]");

* Msg. To.add ("[email protected]");

* Msg. To.add ("[email protected]"), can be sent to more than one person

*/

Msg. Cc. ADD ("[email protected]");

/*

* Msg. Cc. ADD ("[email protected]");

* Msg. Cc. ADD ("[email protected]"), can be copied to many people

*/

Msg. from = new MailAddress ("[Email protected]", "Dulei", System.Text.Encoding.UTF8);

/* Above 3 parameters are sender address (can be written casually), sender name, code */

Msg. Subject = "This is a test message";//message header

Msg. subjectencoding = system.text.encoding.utf8;//message header encoding

Msg. Body = "Mail content";//message content

Msg. bodyencoding = system.text.encoding.utf8;//message content encoding

Msg. isbodyhtml = false;//is an HTML message

Msg. Priority = mailpriority.high;//Message Precedence

SmtpClient client = new SmtpClient ();

Client. Credentials = new System.Net.NetworkCredential ("[Email protected]", "Userpass");

e-mail and password registered in 71info.com

Client. Host = "smtp.71info.com";

Object userState = msg;

Try

{

Client. SendAsync (msg, userState);

Simply a little bit can be client. Send (msg);

MessageBox.Show ("sent successfully");

}

catch (System.Net.Mail.SmtpException ex)

{

MessageBox.Show (ex. Message, "Error sending message");

}

}

3. SMTP over SSL

The code is as follows:

public void Sendmailusegmail ()

{

System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage ();

Msg. To.add ([email protected]);

Msg. To.add ([email protected]);

/*

Msg. To.add ("[email protected]");

* Msg. To.add ("[email protected]");

* Msg. To.add ("[email protected]"), can be sent to more than one person

*/

Msg. Cc. ADD ([email protected]);

/*

* Msg. Cc. ADD ("[email protected]");

* Msg. Cc. ADD ("[email protected]"), can be copied to many people

*/

Msg. from = new MailAddress ("boys90.com", "Dulei", System.Text.Encoding.UTF8);

/* Above 3 parameters are sender address (can be written casually), sender name, code */

Msg. Subject = "This is a test message";//message header

Msg. subjectencoding = system.text.encoding.utf8;//message header encoding

Msg. Body = "Mail content";//message content

Msg. bodyencoding = system.text.encoding.utf8;//message content encoding

Msg. isbodyhtml = false;//is an HTML message

Msg. Priority = mailpriority.high;//Message Precedence

SmtpClient client = new SmtpClient ();

Client. Credentials = new System.Net.NetworkCredential ("[Email protected]", "password");

Write your Gmail email and password above

Client. Port = Ports Used by 587;//gmail

Client. Host = "smtp.gmail.com";

Client. Enablessl = true;//SSL-Encrypted

Object userState = msg;

Try

{

Client. SendAsync (msg, userState);

Simply a little bit can be client. Send (msg);

MessageBox.Show ("sent successfully");

}

catch (System.Net.Mail.SmtpException ex)

{

MessageBox.Show (ex. Message, "Error sending message");

}

}

Through Gmail to send mail, the success rate is very high, almost all can be sent to, recommended to use, the above several methods, I think we have enough to do the development of the use.

I hope this article is helpful to everyone's C # programming.

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C # Three ways to implement sending messages

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C # Three ways to implement sending messages