c#使用SMTPClient发送邮箱

一：问题在于？？？

1：163邮箱，qq邮箱默认未开通第三方邮箱，需要自己去开通

2：开通之后会获得授权码，不可以使用原来的密码，密码改为授权码

二：解决方法

1：在qq邮箱的设置中找到如图，开启smpt服务

2：设置UseDefaultCredentials 为false  ，创建，smtpClient.Credentials = new NetworkCredential(emailSetting.Username, Password（这里是授权码）);

三：代码如下

public class EmailSettings
    {
        public string MailToAddress = "[e-mail]";
        public string MailFromAddress = "[e-mail]";
        public bool UseSsl = true;
        public string Username = "[e-mail]";
        public string Password = "zdyzwmlndsdsdsad";  //要使用qq的 或者163邮箱的授权码
        public string ServerName = "smtp.qq.com";
        public int ServerPort = 25;
        public bool WriteAsFile = false;              //这里要false
        public string FileLocation = "";
    }
    public class EmailOrderProcess:IOrderProcess
    {
        private EmailSettings emailSetting;
        public EmailOrderProcess(EmailSettings setting)
        {
            emailSetting = setting;
        }
        public void ProcessOrder(Cart cart,ShoppingDetials shoppingDetials)
        {
            using(var smtpClient=new SmtpClient())
            {
                smtpClient.EnableSsl = emailSetting.UseSsl;
                smtpClient.Host = emailSetting.ServerName;//smtp.qq.com
                smtpClient.Port = emailSetting.ServerPort;
                smtpClient.UseDefaultCredentials = false;
                smtpClient.Credentials = new NetworkCredential(emailSetting.Username, emailSetting.Password);
                if (emailSetting.WriteAsFile) { }
                StringBuilder body = new StringBuilder().Append("A new order has been submitted");
                var mailMessage = new MailMessage(emailSetting.MailFromAddress, emailSetting.MailToAddress, "A new order", body.ToString());
                smtpClient.Send(mailMessage);
            }
        }
    }