I had this simple email example code, but when using the OpenNetCF an exception is thrown.  Would someone know what is missing causing the exception to occur.  I have and email sender working from the laptop but not from the WinCE device, so I know the local host and email addresses are correct.  It appears to be something with OPENNETCF.

The code and exception are as follows:

Code:

using System;

using System.Linq;

using System.Collections.Generic;

using System.Text;

using OpenNETCF.Net;

using OpenNETCF.Net.Mail;

SmtpClient client = new SmtpClient();

// Set the sender's address

// Allow multiple "To" addresses to be separated by a semi-colon

// Allow multiple "Cc" addresses to be separated by a semi-colon

// Set the subject and message body text

// TODO: *** Modify for your SMTP server ***

// Set the SMTP server to be used to send the message

// Send the e-mail message

try

Exception:

 "OpenNETCF.Net.Mail.SmtpException: SmtpException ---> System.NullReferenceException: NullReferenceException\r\n   at OpenNETCF.Net.Mail.SmtpClient.SendInternal(MailMessage message)\r\n   at OpenNETCF.Net.Mail.SmtpClient.Send(MailMessage message)\r\n   at IMS_Galaxy.SendEmail.SendMessage(String subject, String messageBody, String fromAddress, String toAddress, String ccAddress)\r\n   at IMS_Galaxy.BumpTest.removeInstrumentWhiteSpaces(String data)\r\n   at IMS_Galaxy.BumpTest.determineCylinderAvailable()\r\n   at IMS_Galaxy.BumpTest.BumpTestSequence(UInt32 command, Boolean success)\r\n   at IMS_Galaxy.IRCommunications.IRSendMessage(Boolean portReceiveMessageReceived)\r\n   at IMS_Galaxy.IMSGalaxyMainScreen.irPollTimer_Tick(Object sender, EventArgs e)\r\n   at System.Windows.Forms.Timer._WnProc(WM wm, Int32 wParam, Int32 lParam)\r\n   at System.Windows.Forms.ApplicationThreadContext._InternalContextMessages(WM wm, Int32 wParam, Int32 lParam)\r\n   at Microsoft.AGL.Forms.EVL.EnterMainLoop(IntPtr hwnMain)\r\n   at System.Windows.Forms.Application.Run(Form fm)\r\n   at IMS_Galaxy.Program.Main()\r\n\r\n   at OpenNETCF.Net.Mail.SmtpClient.Send(MailMessage message)\r\n   at IMS_Galaxy.SendEmail.SendMessage(String subject, String messageBody, String fromAddress, String toAddress, String ccAddress)\r\n   at IMS_Galaxy.BumpTest.removeInstrumentWhiteSpaces(String data)\r\n   at IMS_Galaxy.BumpTest.determineCylinderAvailable()\r\n   at IMS_Galaxy.BumpTest.BumpTestSequence(UInt32 command, Boolean success)\r\n   at IMS_Galaxy.IRCommunications.IRSendMessage(Boolean portReceiveMessageReceived)\r\n   at IMS_Galaxy.IMSGalaxyMainScreen.irPollTimer_Tick(Object sender, EventArgs e)\r\n   at System.Windows.Forms.Timer._WnProc(WM wm, Int32 wParam, Int32 lParam)\r\n   at System.Windows.Forms.ApplicationThreadContext._InternalContextMessages(WM wm, Int32 wParam, Int32 lParam)\r\n   at Microsoft.AGL.Forms.EVL.EnterMainLoop(IntPtr hwnMain)\r\n   at System.Windows.Forms.Application.Run(Form fm)\r\n   at IMS_Galaxy.Program.Main()\r\n"

Thanks,

The exception isn't overly helpful, no.  Just looking at the code, though, I see you're setting the client.Host to "localhost" which certainly can't be right - you CE device is not an SMTP server.

Thanks,

I know about the localhost.  I cannot post my server here, so that is not the issue. 

The whole issue is that the exception is not helpful at all.

You're missing the Credential for the client.  You must provide the username, password and domain for your SMTP host.