C#发送邮件代码

using System;  using System.Net;  using System.Net.Mail;  using System.Net.Mime;  namespace Fish  {      /**/     /// <summary>        /// 发送邮件的类        /// </summary>        public class SendMail      {          private MailMessage mailMessage = new MailMessage();          private SmtpClient smtpClient;          private string password;//发件人密码            /**/         /// <summary>            /// 设置收件人、发件人信息与邮件内容、标题            /// </summary>            /// <param name="To">收件人地址</param>            /// <param name="From">发件人地址</param>            /// <param name="Body">邮件正文</param>            /// <param name="Title">邮件的主题</param>            /// <param name="Password">发件人密码</param>            public void Mail(string To, string From, string Body, string Title, string Password)          {              mailMessage.To.Add(To);              mailMessage.From = new System.Net.Mail.MailAddress(From);              mailMessage.Subject = Title;              mailMessage.Body = Body;              mailMessage.IsBodyHtml = true;              mailMessage.BodyEncoding = System.Text.Encoding.UTF8;              mailMessage.Priority = System.Net.Mail.MailPriority.Normal;              this.password = Password;          }          /**/         /// <summary>            /// 添加附件            /// </summary>            public void Attachments(string Path)          {              string[] path = Path.Split(',');              Attachment data;              ContentDisposition disposition;              for (int i = 0; i < path.Length; i++)              {                  data = new Attachment(path[i], MediaTypeNames.Application.Octet);//实例化 附件                    disposition = data.ContentDisposition;                  disposition.CreationDate = System.IO.File.GetCreationTime(path[i]);//获取 附件的创建日期                    disposition.ModificationDate = System.IO.File.GetLastWriteTime(path[i]);// 获取附件的修改日期                    disposition.ReadDate = System.IO.File.GetLastAccessTime(path[i]);//获取附 件的读取日期                    mailMessage.Attachments.Add(data);//添加到附件中              }          }          /**/         /// <summary>            /// 异步发送邮件            /// </summary>            /// <param name="CompletedMethod"></param>            public void SendAsync(SendCompletedEventHandler CompletedMethod)          {              if (mailMessage != null)              {                  smtpClient = new SmtpClient();                  smtpClient.Credentials = new System.Net.NetworkCredential(mailMessage.From.Address, password);//设置发件人身份的票据                    smtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;                  smtpClient.Host = "smtp." + mailMessage.From.Host;                  smtpClient.SendCompleted += new SendCompletedEventHandler(CompletedMethod);//注册异步发送邮件完成时的事件                    smtpClient.SendAsync(mailMessage, mailMessage.Body);              }          }          /**/         /// <summary>            /// 发送邮件            /// </summary>            public void Send()          {              if (mailMessage != null)              {                  smtpClient = new SmtpClient();                  smtpClient.Credentials = new System.Net.NetworkCredential(mailMessage.From.Address, password);//设置发件人身份的票据                    smtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;                  smtpClient.Host = "smtp." + mailMessage.From.Host;                  smtpClient.Send(mailMessage);              }          }          /// <summary>          /// 根据索引删除附件          /// </summary>          /// <param name="Id"></param>          public void DeleteAttachments(int Id)          {              mailMessage.Attachments.RemoveAt(Id);          }      }  }