c# winform pop3 SSL接收邮件 完整

namespace AutoReplyMail
{
    public partial class Form1 : Form
    {
        NetworkStream ns;
        StreamReader sr;
        SslStream sslStream;
        static int count;
        static int count2;

 /// <summary>
        /// 获取接收邮件服务器登陆信息，登陆
        /// </summary>
        public string server = string.Empty;//服务器
        public string port = string.Empty;//端口
        public string loginname = string.Empty;//登陆名
        public string loginpassword = string.Empty;//登陆密码


public void main(){
ArrayList maillist = GetNewMail();
}

public ArrayList GetNewMail()
        {
int mailnum = GetNewMailNum();//获取有邮件封数
ArrayList getnewmail = new ArrayList();//实例化主方法
try(){
Connect();//登录邮箱
string UIDL = MailID(i);//获取邮件唯一标识符

ArrayList getmaillist = GetReadMail(i); //获取邮件信息
MailMessage msg = new MailMessage();
msg.To.Add(GetMailTo(getmaillist));//收件人
msg.From = GetMailFrom(getmaillist);//发件人
List<string> listSubject = GetMailSubject(getmaillist);//标题列表处理
string title = ProcessSubject(listSubject, msg);//标题处理之后
string mailbody = GetMailBody(getmaillist);//正文
mailbody = ProcessBody(mailbody);//正文处理
msg.Body = DecodeBase64(mailbody).Trim();//正文编码处理
Disconnect();//断开服务器
return getnewmail;
}catch(Exception ex){
MessageBox.Show(ex.message);
}
}



/// <summary>
        /// 登陆服务器
        /// </summary>
        private void Connect()
        {
            TcpClient sender = new TcpClient(server, 995);
            Byte[] outbytes;
            string input;
            string readuser = string.Empty;
            string readpwd = string.Empty;
            try
            {