使用C＃通过SMTP发送电子邮件

我不明白为什么这个代码不工作。 我收到一个错误，说不能分配属性

MailMessage mail = new MailMessage(); SmtpClient client = new SmtpClient(); client.Port = 25; client.DeliveryMethod = SmtpDeliveryMethod.Network; client.UseDefaultCredentials = false; client.Host = "smtp.gmail.com"; mail.To = "[e-mail]"; // <-- this one mail.From = "[e-mail]"; mail.Subject = "this is a test email."; mail.Body = "this is my test email body"; client.Send(mail); 

Answer 1

mail.To和mail.To是只读的。 将它们移到构造函数中。

 using System.Net.Mail; ... MailMessage mail = new MailMessage("[e-mail]", "[e-mail]"); SmtpClient client = new SmtpClient(); client.Port = 25; client.DeliveryMethod = SmtpDeliveryMethod.Network; client.UseDefaultCredentials = false; client.Host = "smtp.google.com"; mail.Subject = "this is a test email."; mail.Body = "this is my test email body"; client.Send(mail); 

Answer 2

这个 ：

 mail.To = "[e-mail]"; 

应该：

 mail.To.Add(new MailAddress("[e-mail]")); 

Answer 3

终于有工作:)

 using System.Net.Mail; using System.Text; ... // Command line argument must the the SMTP host. SmtpClient client = new SmtpClient(); client.Port = 587; client.Host = "smtp.gmail.com"; client.EnableSsl = true; client.Timeout = 10000; client.DeliveryMethod = SmtpDeliveryMethod.Network; client.UseDefaultCredentials = false; client.Credentials = new System.Net.NetworkCredential("[e-mail]","password"); MailMessage mm = new MailMessage("[e-mail]", "[e-mail]", "test", "test"); mm.BodyEncoding = UTF8Encoding.UTF8; mm.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure; client.Send(mm); 

对不起之前拼写错误

Answer 4

 public static void SendMail(MailMessage Message) { SmtpClient client = new SmtpClient(); client.Host = "smtp.googlemail.com"; client.Port = 587; client.UseDefaultCredentials = false; client.DeliveryMethod = SmtpDeliveryMethod.Network; client.EnableSsl = true; client.Credentials = new NetworkCredential("[e-mail]", "password"); client.Send(Message); } 

Answer 5

这是如何为我工作的。 希望你觉得它有用

 MailMessage objeto_mail = new MailMessage(); SmtpClient client = new SmtpClient(); client.Port = 25; client.Host = "smtp.internal.mycompany.com"; client.Timeout = 10000; client.DeliveryMethod = SmtpDeliveryMethod.Network; client.UseDefaultCredentials = false; client.Credentials = new System.Net.NetworkCredential("user", "Password"); objeto_mail.From = new MailAddress("[e-mail]"); objeto_mail.To.Add(new MailAddress("[e-mail]")); objeto_mail.Subject = "Password Recover"; objeto_mail.Body = "Message"; client.Send(objeto_mail); 

Answer 6

如果你想让你的电子邮件和密码不出现在你的代码，并希望你的公司的电子邮件客户端服务器使用您的Windows凭据使用下面。

 client.Credentials = CredentialCache.DefaultNetworkCredentials; 

资源

Answer 7

 smtp.Host = "smtp.gmail.com"; // the host name smtp.Port = 587; //port number smtp.EnableSsl = true; //whether your smtp server requires SSL smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network; smtp.Credentials = new NetworkCredential(fromAddress, fromPassword); smtp.Timeout = 20000; 

通过这篇文章更多的细节

Answer 8

使用发件人和收件人的电子邮件地址初始化MailMessage 。 应该是这样的

 string from = "[e-mail]"; //Senders email string to = "[e-mail]"; //Receiver's email MailMessage msg = new MailMessage(from, to); 

阅读如何在C＃中发送电子邮件的完整代码片段

Answer 9

这也会工作..

 string your_id = "[e-mail]"; string your_password = "password"; try { SmtpClient client = new SmtpClient { Host = "smtp.gmail.com", Port = 587, EnableSsl = true, DeliveryMethod = SmtpDeliveryMethod.Network, Credentials = new System.Net.NetworkCredential(your_id, your_password), Timeout = 10000, }; MailMessage mm = new MailMessage(your_iD, "[e-mail]", "subject", "body"); client.Send(mm); Console.WriteLine("Email Sent"); } catch (Exception e) { Console.WriteLine("Could not end email\n\n"+e.ToString()); } 

Answer 10

 MailMessage mm = new MailMessage(txtEmail.Text, txtTo.Text); mm.Subject = txtSubject.Text; mm.Body = txtBody.Text; if (fuAttachment.HasFile)//file upload select or not { string FileName = Path.GetFileName(fuAttachment.PostedFile.FileName); mm.Attachments.Add(new Attachment(fuAttachment.PostedFile.InputStream, FileName)); } mm.IsBodyHtml = false; SmtpClient smtp = new SmtpClient(); smtp.Host = "smtp.gmail.com"; smtp.EnableSsl = true; NetworkCredential NetworkCred = new NetworkCredential(txtEmail.Text, txtPassword.Text); smtp.UseDefaultCredentials = true; smtp.Credentials = NetworkCred; smtp.Port = 587; smtp.Send(mm); Response.write("Send Mail"); 

观看视频： https ： //www.youtube.com/watch？v = bUUNv-19QAI

Answer 11

首先访问https://myaccount.google.com/lesssecureapps ，并允许安全性较低的应用为true 。

然后使用下面的代码。 下面的代码只有在您的电子邮件地址来自gmail时才有效。

 static void SendEmail() { string mailBodyhtml = "<p>some text here</p>"; var msg = new MailMessage("[e-mail]", "[e-mail]", "Hello", mailBodyhtml); msg.To.Add("[e-mail]"); msg.IsBodyHtml = true; var smtpClient = new SmtpClient("smtp.gmail.com", 587); **//if your from email address is "[e-mail]" then host should be "smtp.hotmail.com"** smtpClient.UseDefaultCredentials = true; smtpClient.Credentials = new NetworkCredential("[e-mail]", "password"); smtpClient.EnableSsl = true; smtpClient.Send(msg); Console.WriteLine("Email Sended Successfully"); } 

Answer 12

  //Hope you find it useful, it contain too many things string smtpAddress = "smtp.xyz.com"; int portNumber = 587; bool enableSSL = true; string m_userName = "[e-mail]"; string m_UserpassWord = "56436578"; public void SendEmail(Customer _customers) { string emailID = [e-mail]; string userName = DemoUser; string emailFrom = "[e-mail]"; string password = "qwerty"; string emailTo = emailID; // Here you can put subject of the mail string subject = "Registration"; // Body of the mail string body = "<div style='border: medium solid grey; width: 500px; height: 266px;font-family: arial,sans-serif; font-size: 17px;'>"; body += "<h3 style='background-color: blueviolet; margin-top:0px;'>Aspen Reporting Tool</h3>"; body += "<br />"; body += "Dear " + userName + ","; body += "<br />"; body += "<p>"; body += "Thank you for registering </p>"; body += "<p><a href='"+ sURL +"'>Click Here</a>To finalize the registration process</p>"; body += " <br />"; body += "Thanks,"; body += "<br />"; body += "<b>The Team</b>"; body += "</div>"; // this is done using using System.Net.Mail; & using System.Net; using (MailMessage mail = new MailMessage()) { mail.From = new MailAddress(emailFrom); mail.To.Add(emailTo); mail.Subject = subject; mail.Body = body; mail.IsBodyHtml = true; // Can set to false, if you are sending pure text. using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber)) { smtp.Credentials = new NetworkCredential(emailFrom, password); smtp.EnableSsl = enableSSL; smtp.Send(mail); } } } 

Answer 13

只需要试试这个：

 string smtpAddress = "smtp.gmail.com"; int portNumber = 587; bool enableSSL = true; string emailFrom = "companyemail"; string password = "password"; string emailTo = "Your email"; string subject = "Hello!"; string body = "Hello, Mr."; MailMessage mail = new MailMessage(); mail.From = new MailAddress(emailFrom); mail.To.Add(emailTo); mail.Subject = subject; mail.Body = body; mail.IsBodyHtml = true; using (SmtpClient smtp = new SmtpClient(smtpAddress, portNumber)) { smtp.Credentials = new NetworkCredential(emailFrom, password); smtp.EnableSsl = enableSSL; smtp.Send(mail); } 

Answer 14

 Public Function SendEmail(Optional ByVal p_AsHTML As Boolean = False, Optional ByVal p_themEmail As String = "") As Boolean Dim client As SmtpClient = New SmtpClient ''("FMSERVER.FMINNOVATIONS.COM.AU") 'Dim fromAddress As MailAddress = New MailAddress(Me.FromEmail, "WSMenterprise") 'Dim toAddress As MailAddress Try Dim aMessage As New MailMessage() '(New MailAddress(Me.FromEmail, "WSMenterprise"), New MailAddress(anAdd)) If _fromAddress IsNot Nothing Then If _fromName IsNot Nothing Then aMessage.From = New MailAddress(_fromAddress, _fromName) Else aMessage.From = New MailAddress(_fromAddress) End If End If For Each anAdd As String In _To aMessage.To.Add(New MailAddress(anAdd)) Next For Each cc As String In _CC aMessage.CC.Add(New MailAddress(cc)) Next For Each bcc As String In _BCC aMessage.Bcc.Add(New MailAddress(bcc)) Next aMessage.Subject = _Subject aMessage.IsBodyHtml = p_AsHTML If _EmailLogo Is Nothing Then aMessage.Body = _Body Else If p_themEmail.ToString().ToLower.Contains("dexus") Then Dim htmlView = AlternateView.CreateAlternateViewFromString(_Body.ToString(), Nothing, "text/html") Dim logo As New LinkedResource(_EmailLogo) logo.ContentId = "Dexuslogo1" Dim logo1 As New LinkedResource(_EmailLogo1) logo1.ContentId = "Dexuslogo2" htmlView.LinkedResources.Add(logo) htmlView.LinkedResources.Add(logo1) aMessage.AlternateViews.Add(htmlView) Else Dim htmlView = AlternateView.CreateAlternateViewFromString(_Body.ToString(), Nothing, "text/html") Dim logo As New LinkedResource(_EmailLogo) logo.ContentId = "companylogo" htmlView.LinkedResources.Add(logo) aMessage.AlternateViews.Add(htmlView) End If End If For Each anAttach As Attachment In _Attachments aMessage.Attachments.Add(anAttach) Next If _ReplyTo IsNot Nothing Then aMessage.ReplyToList.Add(New MailAddress(_ReplyTo)) client.Host = "smtpi.cbre.com.au" client.UseDefaultCredentials = True client.Send(aMessage) Catch exRecipUnk As SmtpFailedRecipientException Return False Catch exSmtp As SmtpException ''exSmtp.StatusCode Return False Catch ex As Exception Return False End Try Return True End Function If p_Gmap_code = "DE" Then Dim p_Theme As New Theme("Dexus") Dim passwordlink As String = "" Dim DexuslogoImage1 As String = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Images\Dexus_Notice_Logo.png") Dim DexuslogoImage2 As String = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Images\DexusTenantNotice.png") passwordlink = "<a href='" + p_Theme.TenantLoginPage + "?accesstype=email&te=" + a.Encrypt(p_TenantEmail) + "' target='_blank'>here.</a><br/>" bodys += "<div align='Center'><table border='0' cellpadding='0' cellspacing='0'><tr style='height:50px;'><td width='623px' ></td><td valign='top' width='180'><p align='right'><a href='http://www.dexus.com/'><img border='0' height='50' src=cid:Dexuslogo1 width='174' alt=''/></a></p></td></tr><tr><td colspan='2' width='803' style='height:25px;'></td></tr> <tr><td width='623px'><p align='left' style='font-family:Arial;font-size:14pt;'><strong> Your Dexus Response Password is about to expire</strong></p></td>" bodys += " <td width='180'><p align='right' style='font-family:Arial;font-size:10pt;'>" + DateTime.Now.ToString("dd/MM/yyyy") + " </p>" bodys += "</td></tr><tr><td colspan='2' width='803' style='height:30px;'> </td></tr> <tr> <td colspan='2' width='803' style='font-family:Arial;font-size:10pt;'>" bodys += "<p>" + wishes + " " + p_TenantName.Trim().ToString() + "</p>" bodys += "</td></tr><tr><td colspan='2' width='803' style='height:25px;'></td> </tr><tr><td colspan='2' width='803' style='font-family:Arial;font-size:10pt;'>" bodys += "Your Dexus Response password is about to expire in " + p_remaindays.ToString() + " days.<br /><br /> To reset your password and update your details, please click " + passwordlink.ToString() + "<br /><br />Please note that if you do not update your password by " + p_date + ",then your account will be set to inactive and you will not be able to access Dexus Response.</br></br>Please contact Dexus Response if you require assistance in accessing the portal.</p></td>" 'edit bodys += " </tr><tr><td colspan='2' width='803' style='height:30px;'></td></tr><tr><td colspan='2' width='803'><table align='left' border='0' cellpadding='0' cellspacing='0'><tr><td width='802' style='font-family:Arial;font-size:10pt;'><p><strong>Dexus Response</strong></p></td></tr><tr><td width='802' style='font-family:Arial;font-size:10pt;'><p><a href='mailto:[e-mail]'>[e-mail]</a> <strong>|</strong> 1300 339 870 <strong>|</strong> <a href='https://response.dexus.com/'>response.dexus.com</a></p></td></tr></table></td></tr><tr><td colspan='2' width='803' style='height:15px;'></td></tr><tr> <td colspan='2' width='803'><p> </p><p><a href='https://response.dexus.com/' border='0' target='_blank'><img border='0' height='133'" bodys += "src=cid:Dexuslogo2 alt='' width='800' /></a></p></td></tr><tr><td colspan='2' width='803' style='height:10px;'></td></tr><tr><td colspan='2' width='803' style='font-family:Arial;font-size:10pt;'><p><a href='http://www.dexus.com/who-we-are/terms-and-conditions' style=' color:#000000;'>Terms and Conditions</a><strong> | </strong><a href='http://www.dexus.com/who-we-are/privacy-policy' style=' color:#000000;'> Privacy Policy</a></p></td></tr><tr><td colspan='2' width='803' style='height:40px;'></td></tr><tr><td colspan='2' width='803'><p></p></td></tr><tr><td colspan='2' width='803' style='height:10px;'></td></tr><tr></tr><tr><td colspan='2' width='803' style='height:20px;'></td></tr></table></div>" email = New Common.Email(emailHeading, bodys, p_Theme.EmailFrom, DexuslogoImage1, DexuslogoImage2) email.ToEmail = p_TenantEmail email.SendEmail(True, p_Theme.EmailFrom)