C # attachments can be sent by sending emails,

C # attachments can be sent by sending emails,

Using System; using System. collections. generic; using System. linq; using System. web; using System. net. mail; namespace Ajax. email {public class GetMail {// MailAddress ds = new MailAddress ("1738819932@qq.com"); // Send (ds, "674580075@qq.com", "subject", "content ", "attachment name"); public GetMail () {}/// <summary> /// send email /// </summary> /// <param name = "MessageFrom"> sender's email address </param>/ // <param name = "MessageTo"> recipient's email address </Param> /// <param name = "MessageSubject"> Email Subject </param> /// <param name = "MessageBody"> email content </param> // /<param name = "SUpFile"> attachments </param> // <returns> </returns> public bool Send (MailAddress MessageFrom, string MessageTo, string MessageSubject, string MessageBody, string SUpFile) {MailMessage message = new MailMessage (); message. from = MessageFrom; message. to. add (MessageTo); // the recipient's email address can be multiple to achieve mass mess Age. Subject = MessageSubject; message. Body = MessageBody; if (SUpFile! = "") {SUpFile = Server. MapPath ("~ /Send an email/Upfile/"+ SUpFile); // obtain the Attachment at the local address // convert the file to Attachments Attachment data = new Attachment (SUpFile, MediaTypeNames. application. octet); // Add time stamp information for the file. contentDisposition disposition = data. contentDisposition; disposition. creationDate = System. IO. file. getCreationTime (SUpFile); disposition. modificationDate = System. IO. file. getLastWriteTime (SUpFile); disposition. readDate = System. IO. file. getLastAccessTime (SUpFile); message. attachments. add (data); System. net. mime. contentType ctype = new System. net. mime. contentType ();} message. isBodyHtml = true; // whether the message is in html format. priority = MailPriority. normal; // the priority of the sent mail. SmtpClient SC = new SmtpClient (); SC. host = "smtp.qq.com"; // specify the server address or IP address of the email. port = 25; // specify the sending Port SC. credentials = new System. net. networkCredential ("Send email account", "account password"); // specify try {SC. send (message); // Send the email} catch {return false;} return true ;}}}

 

Symbol in C Language <Yes

Left shift operator (<)

Removes all the binary bits of an operation object from the left and adds 0 to the right ).

For example, a = a <2 shifts the binary bits of a two places to the left and complements 0 to the right,

Move 1 to the left and then a = a * 2;

If the left shift does not include 1 in the Discard high position, then shifts one bit left, which is equivalent to multiplying the number by 2.
Shift right operator (>)

Shifts all the binary bits of a number to several places to the right, and adds 0 to the left of the positive number, 1 to the left of the negative number, and discards the right of the negative number.

The operand shifts one digit to the right, which is equivalent to dividing the number by 2.

For example, a = a> 2 shifts the binary bit of a two places to the right,

0 or 1 to see whether the number is positive or negative.

Symbol in C Language <Yes

Left shift operator (<)

Removes all the binary bits of an operation object from the left and adds 0 to the right ).

For example, a = a <2 shifts the binary bits of a two places to the left and complements 0 to the right,

Move 1 to the left and then a = a * 2;

If the left shift does not include 1 in the Discard high position, then shifts one bit left, which is equivalent to multiplying the number by 2.
Shift right operator (>)

Shifts all the binary bits of a number to several places to the right, and adds 0 to the left of the positive number, 1 to the left of the negative number, and discards the right of the negative number.

The operand shifts one digit to the right, which is equivalent to dividing the number by 2.

For example, a = a> 2 shifts the binary bit of a two places to the right,

0 or 1 to see whether the number is positive or negative.