[ncushing]

Code Part 2

            //Panelists vs. Recipients
            //Conceptually, a Panelist is a potential Recipient, but does not become a Recipient
            // until and invitation has been sent.
            //We can check the list of recipients by calling the GetRecipients(...) method of the 
            //  invitation with a RecipientFilter parameter.  In all cases except "Pending" only
            //  recipients that the software has attempted to send an invitation to will be returned.
            //
            //  The RecipientFilter suports 6 values:
            //  All             -- Get all recipients that have not been deleted and have been
            //                      sent an invitation.
            //  Current         -- Get all recipients thave have not been deleted and have not
            //                      opted out of the invitation.
            //  NotResponded    -- Get all recipients that have not completed the survey.
            //  OptOut          -- Get all recipients that have clicked the opt-out link in the 
            //                      invitation email.
            //  Pending         -- Unlike the other filters, when Pending is specified only recipients
            //                      that the software has NOT attempted to send an email to will
            //                      be returned.
            //  Responded       -- Get all recipients that have responded to the invitation.

            //Get the list of pending recipients, since these are the people we want to invite. To send
            // a reminder message, we could use the list of "NotResponded" recipients.
            ReadOnlyCollection<Recipient> recipients = invitation.GetRecipients(RecipientFilter.Pending);

            //Now let's get to work sending the invitation.
            foreach (Recipient recipient in recipients)
            {
                //Copy the template, which will be "personalized" by the recipient
                InvitationTemplate templateCopy = invitation.Template.Copy();

                //Personalize the template, this includes adding the invitation id, any
                // user profile properties, etc.  Fields in the invitation that can be
                // customized are the body and the subject.  If the recipient is 
                // a registered user, you can make the body or subject contain the value
                // of a profile field by adding a @@[FIELD_NAME] token to the message or subject.
                // For example, to add the user's name and password, you could put something like
                // this in the message:
                // 
                // User Name: @@UserName
                // Password: @@Password
                //
                recipient.PersonalizeTemplate(invitation, templateCopy);

                //Create and send a mail message.
                EmailMessage msg = new EmailMessage();
                msg.To = recipient.EmailToAddress;
                msg.From = templateCopy.FromName + "<" + templateCopy.FromAddress + ">";
                msg.Body = templateCopy.Body;
                msg.Subject = templateCopy.Subject;

                //Send the message, which exception catching so the errors can be reported.
                try
                {
                    //If successful, mark the invitation as successfully sent to this
                    // recipient.
                    EmailGateway.Send(msg);
                    recipient.SuccessfullySent = true;
                }
                catch (Exception ex)
                {
                    //If successful, mark the invitation as not successfully sent to this
                    // recipient and record the error, which will appear in the invitation
                    // management screens in the application.
                    recipient.SuccessfullySent = false;
                    recipient.Error = ex.Message;
                }

                //Store the date/time the attempt was made.
                recipient.LastSent = DateTime.Now;

                //Save the recipient so the success status, error message, and
                // sending time are saved.
                recipient.Save();
            }
        }
    }