How can I send email in WINDOWS APPLICATION ?

Question

Hi, I want to send email using smtp mail from windows application. Can you guide me how it can be done ??? I m not able to do it. Please do reply me. Thank you, bhavin

abdullah · Answer

Hi >>>>> I hope this will help.......... uses STMP to send Email ...with attachment also... using System; using System.Text; using System.IO; using System.Net.Sockets; using System.Net; using System.Web.Mail; namespace SMTP { public class SmtpClient { private string smtpServer; private string username; private string password; public SmtpClient(string server) { smtpServer = server; } public SmtpClient(string server, string user, string pass) { smtpServer = server; username = user; password = pass; } private enum SMTPResponse: int { CONNECT_SUCCESS = 220, GENERIC_SUCCESS = 250, DATA_SUCCESS = 354, QUIT_SUCCESS = 221, EXCHANGE_SUCCESS = 334, LOGIN_SUCCESS = 235 } private void SendData(Socket s, string msg) { byte[] data = Encoding.ASCII.GetBytes(msg); s.Send(data , 0, data.Length, SocketFlags.None); } private bool CheckResponse(Socket s, SMTPResponse expectedResponse ) { string sResponse; int response; byte[] bytes = new byte[1024]; int size = s.Receive(bytes, 0, bytes.Length, SocketFlags.None); sResponse = Encoding.ASCII.GetString(bytes,0, size); response = int.Parse(sResponse.Substring(0,3)); if(response != (int)expectedResponse) return false; return true; } public bool Send(MailMessage message) { IPHostEntry IPhst = Dns.Resolve(smtpServer); IPEndPoint endPt = new IPEndPoint(IPhst.AddressList[0], 25); Socket s= new Socket(AddressFamily.InterNetwork, SocketType.Stream,ProtocolType.Tcp); s.Connect(endPt); if(!CheckResponse(s, SMTPResponse.CONNECT_SUCCESS)) { s.Close(); return false; } SendData(s, "HELO "+Dns.GetHostName()+" "); if(!CheckResponse(s, SMTPResponse.GENERIC_SUCCESS)) { s.Close(); return false; } //if authentication is required if (username != null) { SendData(s, "AUTH LOGIN "); CheckResponse(s, SMTPResponse.EXCHANGE_SUCCESS); SendData(s, Convert.ToBase64String(Encoding.ASCII.GetBytes(username))+" "); CheckResponse(s, SMTPResponse.EXCHANGE_SUCCESS); SendData(s, Convert.ToBase64String(Encoding.ASCII.GetBytes(password))+" "); if(!CheckResponse(s, SMTPResponse.LOGIN_SUCCESS)) { s.Close(); return false; } } SendData(s, "MAIL From: "+message.From+" "); if(!CheckResponse(s, SMTPResponse.GENERIC_SUCCESS)) { s.Close(); return false; } string[] Tos= message.To.Split(new char[] {';'}); foreach (string To in Tos) { SendData(s, "RCPT TO: " +To+ " "); if(!CheckResponse(s, SMTPResponse.GENERIC_SUCCESS)) { s.Close(); return false; } } if(message.Cc!=null) { Tos= message.Cc.Split(new char[] {';'}); foreach (string To in Tos) { SendData(s, "RCPT TO: " +To+ " "); if(!CheckResponse(s, SMTPResponse.GENERIC_SUCCESS)) { s.Close(); return false; } } } StringBuilder data=new StringBuilder(); data.Append("From: " + message.From + " "); Tos= message.To.Split(new char[] {';'}); data.Append("To: "); for( int i=0; i 0 ? "," : "" ); data.Append(Tos[i]); } data.Append(" "); if(message.Cc!=null) { Tos= message.Cc.Split(new char[] {';'}); data.Append("Cc: "); for( int i=0; i 0 ? "," : "" ); data.Append(Tos[i]); } data.Append(" "); } data.Append( "Date: " ); data.Append(DateTime.Now.ToString("ddd, d M y H:m:s z" )); data.Append(" "); data.Append("Subject: " + message.Subject+ " "); data.Append( "X-Mailer: SMTPDirect v1 " ); string MsgBody = message.Body; if(!MsgBody.EndsWith(" ")) MsgBody+=" "; //***************begin process attachments************* if(message.Attachments.Count>0) { data.Append( "MIME-Version: 1.0 " ); data.Append( "Content-Type: multipart/mixed; boundary=unique-boundary-1 " ); data.Append(" "); data.Append( "This is a multi-part message in MIME format. " ); StringBuilder sb = new StringBuilder(); sb.Append("--unique-boundary-1 "); sb.Append("Content-Type: text/plain "); sb.Append("Content-Transfer-Encoding: 7Bit "); sb.Append(" "); sb.Append(MsgBody + " "); sb.Append(" "); foreach(object obj in message.Attachments) { MailAttachment a = obj as MailAttachment; byte[] binaryData; if(a!=null) { FileInfo f = new FileInfo(a.Filename); sb.Append("--unique-boundary-1 "); sb.Append("Content-Type: application/octet-stream; file=" + f.Name + " "); sb.Append("Content-Transfer-Encoding: base64 "); sb.Append("Content-Disposition: attachment; filename=" + f.Name + " "); sb.Append(" "); FileStream fs = f.OpenRead(); binaryData = new Byte[fs.Length]; long bytesRead = fs.Read(binaryData, 0, (int)fs.Length); fs.Close(); string base64String = System.Convert.ToBase64String(binaryData, 0,binaryData.Length); for(int i=0; i< base64String.Length ; ) { int nextchunk=100; if(base64String.Length - (i + nextchunk ) <0) nextchunk = base64String.Length -i; sb.Append(base64String.Substring(i, nextchunk)); sb.Append(" "); i+=nextchunk; } sb.Append(" "); } } sb.Append("--unique-boundary-1-- "); MsgBody=sb.ToString(); } //*************end process attachments*********** SendData(s, ("DATA ")); if(!CheckResponse(s, SMTPResponse.DATA_SUCCESS)) { s.Close(); return false; } data.Append( " " ); data.Append( MsgBody ); data.Append( ". " ); data.Append( " " ); data.Append( " " ); SendData(s, data.ToString()); if(!CheckResponse(s, SMTPResponse.GENERIC_SUCCESS )) { s.Close(); return false; } SendData(s, "QUIT "); CheckResponse(s, SMTPResponse.QUIT_SUCCESS ); s.Close(); return true; } } }

ytram5 · Answer

Nice and simple: Add a reference in your application to the System.Web.dll. Add a using statement at the top for System.Web.Mail. Create a MailMessage object, assign all of the appropriate values, and use the SmtpMail static class to send the MailMessage object. Example: using System.Web.Mail; (snip) MailMessage mm = new MailMessage(); mm.From = "somebody@somewhere.com"; mm.To = "someone@someplace.com"; mm.Subject = "This is the subject"; mm.Body = "This is the body"; SmtpMail.SmtpServer = "mail.somewhere.com"; SmtpMail.Send(mm); There are other properties you can set also, such as using Html formatting, but I'll leave that up to you to discover.

spgilmore · Answer

You can use any assembly that implements it, but System.Web.Mail implements it and it comes with the .NET 1.1 SDK. Add a reference to it and IMPORT the namespace. See the online help on usage. Another one you can use is here. http://www.example-code.com/csharp/sendEmail.asp

spgilmore · Answer

He said a WINDOWS application, not an ASP.NET application.

ferasdeeb · Answer

add new linkLabel1 to your Form ... go to the Text property of the linkLabel1 and write in it "send me a mail" go to the Tag property of the linkLabel1 and write in it "mailto: aaa@bbb.com" now double click on the linkLabel1 the write the following code: System.Diagnostics.Process.Start(linkLabel1.Tag.ToString()); thasts it... Feras

How can I send email in WINDOWS APPLICATION ?

Answers (5)