一个发送电子邮件的类（C#

public class SystemMail
    ...{
        public SystemMail() ...{ }

        ...#region
        private string _to;
        public string To
        ...{
            get ...{ return _to; }
            set ...{ _to = value; }
        }

        private string _from = "abc@163.com";
        public string From
        ...{
            get ...{ return _from; }
            set ...{ _from = value; }
        }

        private string _subject;
        public string Subject
        ...{
            get ...{ return _subject; }
            set ...{ _subject = value; }
        }

        private string _body;
        public string Body
        ...{
            get ...{ return _body; }
            set ...{ _body = value; }
        }
        #endregion

        private string _adminEmail = "abc@163.com";
        public string AdminEmail
        ...{
            get ...{ return _adminEmail; }
            set ...{ _adminEmail = value; }
        }

        private string _smtpServer = "smtp.163.com";
        public string SmtpServer
        ...{
            get ...{ return _smtpServer; }
            set ...{ _smtpServer = value; }
        }

        private string _BodyFormat = "html";
        public string BodyFormat
        ...{
            get ...{ return _BodyFormat; }
            set ...{ _BodyFormat = value; }
        }

        private string _BodyEncoding = "gb2312";
        public string BodyEncoding
        ...{
            get ...{ return _BodyEncoding; }
            set ...{ _BodyEncoding = value; }
        }

        private string _password = "111111";
        public string Password
        ...{
            get ...{ return _password; }
            set ...{ _password = value; }
        }

        private string _userName = "online";
        public string UserName
        ...{
            get ...{ return _userName; }
            set ...{ _userName = value; }
        }

        public bool Send()
        ...{
            try
            ...{
              
                System.Net.Mail.SmtpClient SC = new SmtpClient();               
                SC.Host = this.SmtpServer;               
                SC.UseDefaultCredentials = false;
                SC.Port = 25;               
                System.Net.NetworkCredential basicAuthenticationInfo = new System.Net.NetworkCredential(this.UserName, this.Password);
                SC.Credentials = basicAuthenticationInfo;                
                MailMessage em = new MailMessage();                
                em.To.Add(new System.Net.Mail.MailAddress(this.To));
                em.From = new MailAddress(this.From);
                em.Subject = this.Subject;
                em.Body = this.Body;
                em.SubjectEncoding = System.Text.Encoding.GetEncoding(_BodyEncoding);
                if (_BodyEncoding != "")
                ...{
                    em.BodyEncoding = System.Text.Encoding.GetEncoding(_BodyEncoding);
                }

                if (_BodyFormat.ToLower() == "html")
                ...{
                    em.IsBodyHtml = true;
                }
                else
                ...{
                    em.IsBodyHtml = false;

                }
                SC.Send(em);          

                return true;
            }
            catch (System.Exception E)
            ...{
              
                return false;
            }
        }


    }