我需要从我的应用程序发送邮件消息，仍然有连接问题。请帮我看看这段代码。 [英] i need to send a mail msg from my application, still having prob with connection. please help me review this code.

问题描述

//这些名称空间名为

 使用系统; 
 使用 System.Collections.Generic; 
 使用 System.Linq; 
 使用 System.Web; 
 使用 System.Web.UI; 
 使用 System.Web.UI.WebControls; 
 使用 System.Net; 
 使用 System.Net.Mail; 
 使用 System.Net.Mime; 
 使用 System.Deployment; 
 使用 System.Threading; 
 使用 System.ComponentModel; 
 
 尝试 
 {
 MailMessage mail =  new  MAILMESSAGE（）; 
  //  设置From，To和CC  
 mail.From =  new  MailAddress（  [e-mail] ，  MyWeb网站）; 
 mail.To.Add（ new  MailAddress（  [e-mail]））; 
 mail.CC.Add（ new  MailAddress（  [e-mail]））; 
 mail.Body = msgtext.Text; 
 
 SmtpClient smtpClient =  new  SmtpClient（  smtp.gmail.com， 25 ）; 
 
 smtpClient.Credentials =  new  System.Net.NetworkCredential（  [e-mail]， 这很有趣）; 
 smtpClient.UseDefaultCredentials =  true ; 
 smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network; 
 smtpClient.EnableSsl =  false ; 
 
 smtpClient.Send（mail）; 
 Response.Write（  Email Sent）; 
} 
  catch （例外q）
 {
 Label12.Text =  消息： + q.Message +  来源： + q.Source +  堆栈跟踪： + q 。堆栈跟踪; 
} 

解决方案

将代码更改为



< pre lang =c＃> MailMessage mail = new MailMessage（）;
// 设置From，To和CC
mail.From = new MailAddress（ [e-mail] ， MyWeb网站）;
mail.To.Add（ new MailAddress（ [e-mail]））;
mail.CC.Add（ new MailAddress（ [e-mail]））;
mail.Body = msgtext.Text;

SmtpClient smtpClient = new SmtpClient（ smtp.gmail.com， 587 ）;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
smtpClient.EnableSsl = true ;
smtpClient.UseDefaultCredentials = false ;
smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
smtpClient.Credentials = new System.Net.NetworkCredential（ [e-mail]， 这很有趣）;
smtpClient.Send（mail）;
Response.Write（ Email Sent）;

希望上述更改有所帮助。

请尝试使用相同的代码进行工作。 。 
 
 MailMessage msf = new MailMessage（[e-mail]，samatha507 @gmail.com，测试邮件，无论）; 
 msf.IsBodyHtml = false; 
 NetworkCredential ne = new NetworkCredential（[e-mail]，mypassword）; 
 SmtpClient sc = new SmtpClient（smtp.gmail.com，587）; 
 sc.UseDefaultCredentials = false; 
 sc.Credentials = ne; 
 sc.EnableSsl = true; 
 sc.Send（msf）; 
 Response.Write（邮件发送成功）; 

//these are namespaces i called

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net;
using System.Net.Mail;
using System.Net.Mime;
using System.Deployment;
using System.Threading;
using System.ComponentModel;

try
            {
                MailMessage mail = new MailMessage();
                //Setting From , To and CC
                mail.From = new MailAddress("[e-mail]", "MyWeb Site");
                mail.To.Add(new MailAddress("[e-mail]"));
                mail.CC.Add(new MailAddress("[e-mail]"));
                mail.Body = msgtext.Text;

                SmtpClient smtpClient = new SmtpClient("smtp.gmail.com", 25);

                smtpClient.Credentials = new System.Net.NetworkCredential("[e-mail]", "this is fun");
                smtpClient.UseDefaultCredentials = true;
                smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtpClient.EnableSsl = false;

                smtpClient.Send(mail);
                Response.Write("Email Sent");
            }
            catch (Exception q)
            {
                Label12.Text = "Message: " + q.Message + "Source: " + q.Source + "Stack Trace: " + q.StackTrace;
            }

解决方案

Change the code to

MailMessage mail = new MailMessage();
//Setting From , To and CC
mail.From = new MailAddress("[e-mail]", "MyWeb Site");
mail.To.Add(new MailAddress("[e-mail]"));
mail.CC.Add(new MailAddress("[e-mail]"));
mail.Body = msgtext.Text;
 
SmtpClient smtpClient = new SmtpClient("smtp.gmail.com", 587);
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; 
smtpClient.EnableSsl = true;
smtpClient.UseDefaultCredentials = false;
smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
smtpClient.Credentials = new System.Net.NetworkCredential("[e-mail]", "this is fun");
smtpClient.Send(mail);
Response.Write("Email Sent");

Hope the above changes help.

Please try like this it is working.am using same code.

MailMessage msf = new MailMessage("[e-mail]", "[e-mail]", "test mail", "no matter");               
                msf.IsBodyHtml = false;
                NetworkCredential ne = new NetworkCredential("[e-mail]", "mypassword");
                SmtpClient sc = new SmtpClient("smtp.gmail.com", 587);
                sc.UseDefaultCredentials = false;
                sc.Credentials = ne;
                sc.EnableSsl = true;
                sc.Send(msf);
                Response.Write("mail send successfully");

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