Problem in displaying plain text alternateview to non-html clients

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public static string SendMessageWithAttachment(string sendTo, string sendFrom,

string sendSubject, string sendMessage, ArrayList attachments)

{

try

{

sendMessage = sendMessage.Replace("\r\n", "
");

sendMessage = "

" + sendMessage;

// validate email address

//bool bTest = ValidateEmailAddress(sendTo);

//if (bTest == false)

// return "Invalid recipient email address: " + sendTo;

// Create the basic message

MailAddress from=new MailAddress("");

//MailAddress to = new MailAddress("

MailAddress to = new MailAddress("[email protected]");

MailMessage bccMsg = new MailMessage(from, to);

bccMsg.ReplyTo = new MailAddress("[email protected]");

bccMsg.Bcc.Add(sendTo);

// bccMsg.To = "";

bccMsg.Subject = sendSubject;

bccMsg.Body = sendMessage;

//MailMessage message = new MailMessage(

// sendFrom,

// sendTo,

// sendSubject,

// sendMessage);

// The attachments arraylist should point to a file location where

// the attachment resides - add the attachments to the message

//foreach (string attach in attachments)

//{

// Attachment attached = new Attachment(attach, MediaTypeNames.Application.Octet);

// bccMsg.Attachments.Add(attached);

//}

AlternateView plainView = AlternateView.CreateAlternateViewFromString("If you are not able to view the bulletin, please save the attachment to your computer open it.", System.Text.Encoding.ASCII, "text/plain");

AlternateView htmlview = AlternateView.CreateAlternateViewFromString("" + sendMessage + "", System.Text.Encoding.Unicode, "text/html");

//AlternateView htmlview=new AlternateView(attachments[0].ToString());

ContentType type=new ContentType(MediaTypeNames.Text.Plain);

plainView.ContentType = type;

for (int a = 0; a < attachments.Count; a++)

bccMsg.Attachments.Add(new Attachment(attachments[a].ToString()));

LinkedResource res = new LinkedResource(attachments[0].ToString());

res.ContentId = "logo";

//htmlview.LinkedResources.Add(res);

bccMsg.AlternateViews.Add(plainView);

bccMsg.AlternateViews.Add(htmlview);

bccMsg.IsBodyHtml = true ;

// create smtp client at mail server location

// SmtpClient client = new SmtpClient(Properties.Settings.Default.SMTPAddress);

SmtpClient client = new SmtpClient("", 25);

client.Timeout = 600000;

client.UseDefaultCredentials = false;

// Add credentials

System.Net.NetworkCredential nc = new System.Net.NetworkCredential("");

client.Credentials = nc;

// send message

client.Send(bccMsg);

return "Message sent to " + sendTo + " at " + DateTime.Now.ToString() + ".";

}

catch (Exception ex)

{

return ex.Message.ToString();

}

}