/SimpleUtils/SimpleMail.cs

using System;

using System.Collections.Generic;

using System.Text;

using System.Net;

using System.Net.Mail;

using System.Net.Sockets;

using Microsoft.Win32;



namespace SimpleUtils

{

    public class SimpleMail

    {

        #region Properties

        private string _smtpServer = null;



        public string SmtpServer

        {

            get { return _smtpServer; }

        }



        private string _userName = null;

        public string UserName

        {

            get { return _userName; }

            set { _userName = value; }

        }



        private string _password = null;

        public string Password

        {

            get { return _password; }

            set { _password = value; }

        }



        private bool _useDefaultCredentials = false;

        public bool UseDefaultCredentials

        {

            get { return _useDefaultCredentials; }

            set { _useDefaultCredentials = value; }

        }



        private int _port = 0;

        public int Port

        {

            get { return _port; }

            set { _port = value; }

        }



        private MailAddress _fromAddress = null;



        public MailAddress FromAddress

        {

            get { return _fromAddress; }

            set { _fromAddress = value; }

        }

        #endregion Properties



        #region Constructors

        public SimpleMail(string smtpServer, string fromAddress)

        {

            Init(smtpServer, fromAddress, null);

        }



        public SimpleMail(string smtpServer, string fromAddress, string fromDisplayName)

        {

            Init(smtpServer, fromAddress, fromDisplayName);

        }



        protected void Init(string smtpServer, string fromAddress, string fromDisplayName)

        {

            _smtpServer = smtpServer;

            _fromAddress = new MailAddress(fromAddress, fromDisplayName);

        }

        #endregion Constructors



        #region Send Mail Functions

        public void Send(string receipt, string receiptName, string subject, string body)

        {

            Send(receipt, receiptName, subject, body, null, null, null);

        }



        public void Send(string receipt, string receiptName, string subject, string body, string[] attachments)

        {

            Send(receipt, receiptName, subject, body, null, null, attachments);

        }



        public void Send(string receipt, string receiptName, string subject, string body, string cc)

        {

            Send(receipt, receiptName, subject, body, cc, null, null);

        }



        public void Send(string receipt, string receiptName, string subject, string body, string cc, string[] attachments)

        {

            Send(receipt, receiptName, subject, body, cc, null, attachments);

        }



        public void Send(string receipt, string receiptName, string subject, string body, string cc, string bcc, string[] attachments)

        {



            MailMessage msg = new MailMessage();



            msg.From = _fromAddress;



            AddAddresses(receipt, receiptName, msg.To);

            AddAddresses(cc, msg.CC);

            AddAddresses(bcc, msg.Bcc);



            msg.Subject = subject;

            msg.BodyEncoding = System.Text.Encoding.UTF8;

            msg.IsBodyHtml = true;

            msg.Body = body;



            if (attachments != null)

            {

                for (int i = 0; i < attachments.Length; i++)

                {

                    if (String.IsNullOrEmpty(attachments[i])) continue;

                    msg.Attachments.Add(new Attachment(attachments[i]));

                }

            }



            SmtpClient smtpClient = new SmtpClient(_smtpServer);

            if (_port > 0) smtpClient.Port = _port;

            if (IsAuthenticationRequired)

            {

                CredentialCache myCache = new CredentialCache();

                myCache.Add(_smtpServer, smtpClient.Port, "login", new NetworkCredential(UserName, Password));

                smtpClient.Credentials = myCache;

            }

            else

            {

                if (_useDefaultCredentials) smtpClient.UseDefaultCredentials = _useDefaultCredentials;

            }

            smtpClient.Send(msg);

        }



        private bool IsAuthenticationRequired

        {

            get { return !String.IsNullOrEmpty(UserName) && !String.IsNullOrEmpty(Password); }

        }



        private char[] _addressSeparator = new char[] { ';' };

        protected void AddAddresses(string addresses, MailAddressCollection mac)

        {

            if (addresses == null) return;



            string[] s = addresses.Split(_addressSeparator, StringSplitOptions.RemoveEmptyEntries);

            if (s != null)

            {

                for (int i = 0; i < s.Length; i++)

                {

                    mac.Add(s[i]);

                }

            }



        }



        protected void AddAddresses(string addresses, string displayNames, MailAddressCollection mac)

        {

            if (addresses == null) return;



            string[] addrs = addresses.Split(_addressSeparator, StringSplitOptions.RemoveEmptyEntries);

            string[] names;



            if (String.IsNullOrEmpty(displayNames)) names = null;

            else names = displayNames.Split(_addressSeparator, StringSplitOptions.RemoveEmptyEntries);



            if (addrs != null)

            {

                for (int i = 0; i < addrs.Length; i++)

                {

                    string address = addrs[i].Trim();

                    string name;



                    if (names != null && i < names.Length) name = names[i];

                    else name = address;



                    MailAddress addr = new MailAddress(address, name);

                    mac.Add(addr);

                }

            }

        }



        #endregion Send Mail Functions



        //#region Email Checking functions

        //public bool IsValidEmailAddress(string emailAddress)

        //{

        //    if (!SimpleRegex.IsEmail(emailAddress))

        //    {

        //        return false;

        //    }



        //    bool valid = false;

        //    try

        //    {

        //        using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))

        //        {

        //            //StringBuilder sb = new StringBuilder();



        //            int timeout = 10000;

        //            socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, timeout);

        //            int port = 25;

        //            socket.Connect(_smtpServer, port);

        //            byte[] buffer = new byte[0x400];



        //            int count = socket.Receive(buffer);

        //            string result = Encoding.ASCII.GetString(buffer, 0, count);

        //            //sb.Append(result);



        //            string command = String.Format("HELO {0}\r\n", SimpleSystemInfo.SimpleNetworkInfo.GetHostName());

        //            //sb.Append(command);

        //            byte[] bytes = Encoding.ASCII.GetBytes(command);

        //            socket.Send(bytes);

        //            count = socket.Receive(buffer);

        //            result = Encoding.ASCII.GetString(buffer, 0, count);

        //            //sb.Append(result);



        //            command = String.Format("MAIL FROM:<{0}>\r\n", _fromAddress);

        //            //sb.Append(command);

        //            bytes = Encoding.ASCII.GetBytes(command);

        //            socket.Send(bytes);



        //            count = socket.Receive(buffer);

        //            result = Encoding.ASCII.GetString(buffer, 0, count);

        //            //sb.Append(result);



        //            command = String.Format("RCPT TO:<{0}>\r\n", emailAddress.Trim());

        //            //sb.Append(command);

        //            bytes = Encoding.ASCII.GetBytes(command);

        //            socket.Send(bytes);

        //            count = socket.Receive(buffer);

        //            result = Encoding.ASCII.GetString(buffer, 0, count);

        //            //sb.Append(result);



        //            bool flag = this.IsGoodResponse(result);

        //            command = "QUIT\r\n";

        //            //sb.Append(command);

        //            bytes = Encoding.ASCII.GetBytes(command);

        //            socket.Send(bytes);

        //            count = socket.Receive(buffer);

        //            result = Encoding.ASCII.GetString(buffer, 0, count);

        //            //sb.Append(result);



        //            valid = flag;

        //        }

        //    }

        //    catch

        //    {

        //        throw;

        //    }

        //    return valid;

        //}



        //private bool IsGoodResponse(string response)

        //{

        //    return response.Trim().StartsWith("250");

        //}

        //#endregion Email Checking functions



        //#region Internet Accounts Manager

        //public class InternetEmailAccount

        //{

        //    public string POP3Server;

        //    public string SMTPServer;

        //    public string SMTPEmailAddress;

        //    public string SMTPDisplayName;

        //}



        //public static InternetEmailAccount GetInternetEmailAccount()

        //{

        //    string defaultEntry = GetInternetEmailAccountDefaultEntry();

        //    if (String.IsNullOrEmpty(defaultEntry)) return null;

        //    return GetInternetEmailAccount(defaultEntry);

        //}



        //public static InternetEmailAccount GetInternetEmailAccount(string entry)

        //{

        //    InternetEmailAccount account = null;

        //    try

        //    {

        //        using (RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Internet Account Manager\Accounts\" + entry))

        //        {

        //            if (key != null)

        //            {

        //                account = new InternetEmailAccount();

        //                account.POP3Server = key.GetValue("POP3 Server", null) as string;

        //                account.SMTPServer = key.GetValue("SMTP Server", null) as string;

        //                account.SMTPEmailAddress = key.GetValue("SMTP Email Address", null) as string;

        //                account.SMTPDisplayName = key.GetValue("SMTP Display Name", null) as string;

        //            }

        //        }

        //    }

        //    catch

        //    {

        //        return null;

        //    }

        //    return account;

        //}



        //private static string GetInternetEmailAccountDefaultEntry()

        //{

        //    string s = null;

        //    using (RegistryKey key = Registry.CurrentUser.OpenSubKey(@"Software\Microsoft\Internet Account Manager"))

        //    {

        //        if (key != null)

        //            s = key.GetValue("Default Mail Account", null) as string;

        //    }

        //    return s;

        //}

        //#endregion Internet Accounts Manager



    } //end of class

}