其实大同小异，记录下
using System; using System.Collections.Generic; using System.Text; using System.Net; using System.Net.Mail; using System.Net.Mime; using System.IO; using System.ComponentModel; namespace Mail { class Program { static void Main(string[] args) { } static void PlainText() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void HtmlEmail() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is a sample body with html in it. <b>This is bold</b> <font color=#336699>This is blue</font>"; mail.IsBodyHtml = true; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void MultiPartMime() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; //first we create the Plain Text part AlternateView plainView = AlternateView.CreateAlternateViewFromString("This is my plain text content, viewable by those clients that don't support html", null, "text/plain"); //then we create the Html part AlternateView htmlView = AlternateView.CreateAlternateViewFromString("<b>this is bold text, and viewable by those mail clients that support html</b>", null, "text/html"); mail.AlternateViews.Add(plainView); mail.AlternateViews.Add(htmlView); //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); //specify the mail server address smtp.Send(mail); } static void FriendlyFromName() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses //to specify a friendly 'from' name, we use a different ctor mail.From = new MailAddress("me@mycompany.com", "Steve James" ); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void FriendlyToName() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses //to specify a friendly 'from' name, we use a different ctor mail.From = new MailAddress("me@mycompany.com", "Steve James"); //since the To,Cc, and Bcc accept addresses, we can use the same technique as the From address mail.To.Add( new MailAddress( "you@yourcompany.com", "Beth Jones") ); mail.CC.Add(new MailAddress("donna@yourcompany.com", "Donna Summers")); mail.Bcc.Add(new MailAddress("bob@yourcompany.com", "Bob Smith")); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void MultipleRecipients() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses //to specify a friendly 'from' name, we use a different ctor mail.From = new MailAddress("me@mycompany.com", "Steve James"); //since the To,Cc, and Bcc accept addresses, we can use the same technique as the From address //since the To, Cc, and Bcc properties are collections, to add multiple addreses, we simply call .Add(...) multple times mail.To.Add("you@yourcompany.com"); mail.To.Add("you2@yourcompany.com"); mail.CC.Add("cc1@yourcompany.com"); mail.CC.Add("cc2@yourcompany.com"); mail.Bcc.Add("blindcc1@yourcompany.com"); mail.Bcc.Add("blindcc2@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void FriendlyNonAsciiName() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses //to specify a friendly non ascii name, we use a different ctor. //A ctor that accepts an encoding that matches the text of the name mail.From = new MailAddress("me@mycompany.com", "Steve 豣irk", Encoding.GetEncoding( "iso-8859-1")); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void SetPriority() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //specify the priority of the mail message mail.Priority = MailPriority.High; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void SetTheReplyToHeader() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //specify the priority of the mail message mail.ReplyTo = new MailAddress("SomeOtherAddress@mycompany.com"); //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void CustomHeaders() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //to add custom headers, we use the Headers.Add(...) method to add headers to the //.Headers collection mail.Headers.Add("X-Company", "My Company"); mail.Headers.Add("X-Location", "Hong Kong"); //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void ReadReceipts() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //To request a read receipt, we need add a custom header named 'Disposition-Notification-To' //in this example, read receipts will go back to 'someaddress@mydomain.com' //it's important to note that read receipts will only be sent by those mail clients that //a) support them //and //b)have them enabled. mail.Headers.Add("Disposition-Notification-To", "<someaddress@mydomain.com>"); //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void AttachmentFromFile() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this content is in the body"; //add an attachment from the filesystem mail.Attachments.Add(new Attachment("c:\\temp\\example.txt")); //to add additional attachments, simply call .Add(...) again mail.Attachments.Add(new Attachment("c:\\temp\\example2.txt")); mail.Attachments.Add(new Attachment("c:\\temp\\example3.txt")); //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static void AttachmentFromStream() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this content is in the body"; //Get some binary data byte[] data = GetData(); //save the data to a memory stream MemoryStream ms = new MemoryStream(data); //create the attachment from a stream. Be sure to name the data with a file and //media type that is respective of the data mail.Attachments.Add( new Attachment( ms, "example.txt", "text/plain" )); //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } static byte[] GetData() { //this method just returns some binary data. //it could come from anywhere, such as Sql Server string s = "this is some text"; byte[] data = Encoding.ASCII.GetBytes(s); return data; } static void LoadFromConfig(){ //the from address, along with the server properties will be set in the app.config, //thus we don't need to specify them in code //create the mail message MailMessage mail = new MailMessage(); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient(); smtp.Send(mail); } static void Authenticate() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); //to authenticate we set the username and password properites on the SmtpClient smtp.Credentials = new NetworkCredential("username", "secret"); smtp.Send(mail); } static void ChangePort() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); //to change the port (default is 25), we set the port property smtp.Port = 587; smtp.Send(mail); } static void EmbedImages() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; //first we create the Plain Text part AlternateView plainView = AlternateView.CreateAlternateViewFromString("This is my plain text content, viewable by those clients that don't support html", null, "text/plain"); //then we create the Html part //to embed images, we need to use the prefix 'cid' in the img src value //the cid value will map to the Content-Id of a Linked resource. //thus <img src='cid:companylogo'> will map to a LinkedResource with a ContentId of 'companylogo' AlternateView htmlView = AlternateView.CreateAlternateViewFromString("Here is an embedded image.<img src=cid:companylogo>", null, "text/html"); //create the LinkedResource (embedded image) LinkedResource logo = new LinkedResource( "c:\\temp\\logo.gif" ); logo.ContentId = "companylogo"; //add the LinkedResource to the appropriate view htmlView.LinkedResources.Add(logo); //add the views mail.AlternateViews.Add(plainView); mail.AlternateViews.Add(htmlView); //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); //specify the mail server address smtp.Send(mail); } static void SSL() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //Port 587 is another SMTP port SmtpClient smtp = new SmtpClient("127.0.01", 587); smtp.EnableSsl = true; smtp.Send(mail); } static void SendAsync() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); //specify the mail server address //the userstate can be any object. The object can be accessed in the callback method //in this example, we will just use the MailMessage object. object userState = mail; //wire up the event for when the Async send is completed smtp.SendCompleted += new SendCompletedEventHandler(SmtpClient_OnCompleted); smtp.SendAsync( mail, userState ); } public static void SmtpClient_OnCompleted(object sender, AsyncCompletedEventArgs e) { //Get the Original MailMessage object MailMessage mail= (MailMessage)e.UserState; //write out the subject string subject = mail.Subject; if (e.Cancelled) { Console.WriteLine("Send canceled for mail with subject [{0}].", subject); } if (e.Error != null) { Console.WriteLine("Error {1} occurred when sending mail [{0}] ", subject, e.Error.ToString()); } else { Console.WriteLine("Message [{0}] sent.", subject ); } } public static void PickupDirectory() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //if we are using the IIS SMTP Service, we can write the message //directly to the PickupDirectory, and bypass the Network layer SmtpClient smtp = new SmtpClient(); smtp.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis; smtp.Send(mail); } public static void EmailWebPage() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; //screen scrape the html string html = ScreenScrapeHtml("http://localhost/example.htm"); mail.Body = html; mail.IsBodyHtml = true; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } public static string ScreenScrapeHtml(string url) { WebRequest objRequest = System.Net.HttpWebRequest.Create(url); StreamReader sr = new StreamReader(objRequest.GetResponse().GetResponseStream()); string result = sr.ReadToEnd(); sr.Close(); return result; } public static void NonAsciiMail() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("you@yourcompany.com"); //set the content mail.Subject = "This is an email"; //to send non-ascii content, we need to set the encoding that matches the //string characterset. //In this example we use the ISO-8859-1 characterset mail.Body = "this text has some ISO-8859-1 characters: 庖涨"; mail.BodyEncoding = Encoding.GetEncoding("iso-8859-1"); //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); smtp.Send(mail); } public static void InnerExceptions() { //create the mail message MailMessage mail = new MailMessage(); //set the addresses mail.From = new MailAddress("me@mycompany.com"); mail.To.Add("him@hiscompany.com"); //set the content mail.Subject = "This is an email"; mail.Body = "this is the body content of the email."; //send the message SmtpClient smtp = new SmtpClient("127.0.0.1"); try { smtp.Send(mail); } catch (Exception ex) { Exception ex2 = ex; string errorMessage = string.Empty; while (ex2 != null) { errorMessage += ex2.ToString(); ex2 = ex2.InnerException; } Console.WriteLine(errorMessage); } } } }