There are times when you may want to enumerate the fields set on a message while debugging issues with CDOSYS, System.Web.Mail, or System.Net.Mail. Below is sample code which will enumerate these fields. As you can see, there are some considerable differenences between how enumeration is done. CDOSYS...

In the following samples, I'm going to send an inline attachment using CDOSYS and System.Net.Mail (SNM). Lets say you have an html document with text above and below a jpg file and you want this document inside of a message you are going to send. Below is the the basic HTML document. Notice that img...

//============================ Optional Settings ======================== if (this.Priority.Length != 0) { if (this.Priority == "Non Urgent") { oMsg.Priority = System.Web.Mail.MailPriority.Low; }; if (this.Priority == "Normal") { oMsg.Priority = System.Web.Mail.MailPriority.Normal; }; if (this.Priority...

Todo: 1) Open an appointment in Outlook. Save to file as an .ICS file. 2) Create a C# project and add the code below. 3) Do the TODO sections. 'TODO: Add a refernce to CDOSYS using System.IO; private void btnSendUsingIcs_Click(object sender, System.EventArgs e) { string sFrom = " me@mycompany.com...

While Microsoft products follow many RFC guidelines for VCALENDAR/iCAL, it does not mean that they support development of VCALENDAR/iCAL directly. Microsoft has APIs which can build and read such content. Working with those APIs is supported; however working with VCALENDAR/iCAL text programmatically...

Email was being sent using SmtpMail from System.Web.Mail. The code worked on the older 2000 server, however did not work when placed on the new 2003 server. When the email was sent, the code threw the following error: (0x80040220) The 'SendUsing' configuration value is invalid. This line was being...

Note: By setting the ContentMediaType property of the attatchment body part object to "text/html", you should be able to properly attatch most any type of file. This includes .mht, .ics, etc. Example: // Attatch needed files. // TODO: Change this section or comment-out String sFile = @"C:\dev\mapi...