Attaching multiple files of any type to a mail message?

[Robert Dufour]

I am trying to use framework 1.1 - stuck with it. to send emails from a
windows form application. The email messages can have attachments, usually
two and they can be either text or sounds (wav files) or images (bmp, gif or
tiff)

I can send the email messages OK but the attachments are giving me grief.

Can anyone provide some code that adds attachments to web mail messages.

Thanks for any help,
Bob

 

[Cor Ligthert [MVP]]

Robert,

It depends how you sent the email. If you use the default client method, you
cannot use attachment.
If you use SMTP (only on "professional and 2003 OS") than you can use SMTP
mail.

So let us know what you are doing?

Cor

 

[Robert Dufour]

Cor this is the snippet of code that I use so far,
Imports System.Web.Mail

Public Class clsWebMail

Public Sub SendWebMail(ByVal Mailto As String, _

ByVal MailFrom As String, _

ByVal Subject As String, _

ByVal Body As String, _

Optional ByVal MailAttachments As String = "", _

Optional ByVal MailCC As String = "", _

Optional ByVal MailBcc As String = "", _

Optional ByVal ServerName As String = "localhost", _

Optional ByVal UserLogin As String = "", _

Optional ByVal Password As String = "")

'The mail attachments string should contain semi colon delimited full
pathnames

'of the files to be attached.

Try

Dim mailMsg As New MailMessage

With mailMsg

..From = MailFrom

..To = Mailto

..Cc = MailCC

..Bcc = MailBcc

..Subject = Subject

..Body = Body

..Priority = MailPriority.High

End With

Dim AttachItem As String

If MailAttachments <> "" Then

Dim delimStr As String = ";"

Dim delimiter As Char() = delimStr.ToCharArray()

Dim split As String() = Nothing

split = MailAttachments.Split(delimiter)

For Each AttachItem In split

Dim attachment As New MailAttachment(AttachItem) 'create the attachment for
the message

mailMsg.Attachments.Add(attachment) 'add the attachment

Next AttachItem

End If

If ServerName <> "localhost" Then

mailMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate",
"1") 'basic authentication

mailMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername",
UserLogin) 'Login name

mailMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword",
"Password") 'set your password here

End If

SmtpMail.SmtpServer = ServerName

SmtpMail.Send(mailMsg)

Catch ex As Exception

WriteLogEntry("Application", "WebMailing", "Web mail send error " &
ex.InnerException.Message, EventLogEntryType.Error, 0, 0)

End Try

End Sub

End Class

The code works OK except when I try to use the attachments. The project
needs to work on a Windows XP Pro or Windows 2000 workstation, it is not
intended for a 2003 server. I know that in 2005 the mailing has been moved
to SYSTEM.NET.MAIL but I'm stuck with using VS2003 that uses
system.web.mail.
I found some info and code samples at
http://www.systemwebmail.com/faq/2.3.aspx but the attachments don't work and
I need it, badly.

Bob

 

[Cor Ligthert [MVP]]

Robert,

The first thing I thought on was "Is Robert using HTML post, because that
preservers the charachters"
Almost nobody likes that but as you have to do that, than you have no
alternatives.

At the moment I don't have the time to check your code but this is the best
website with information about your problem. If nobody else is checking your
code and you keeps the problem, than please reply I can than see if I have
the time to check it in the weekend.

http://www.systemwebmail.net/

Cor
..

 

[Robert Dufour]

Cor
I looked at that site and that's where I picked up on how to do it. I did
some more testing with my code and I found that the attachments work OK when
I use localhost (i.e the built-in SMTP server that gets installed with IIS).
But I find that if I try to use an outside mail server like
mail.mycompany.com which is outside my LAN and requires a logon user name
and password, then I can't send mail messages to which I try to attach files
using my code, however if I don't try to use attachments the mail message
gets sent OK. It seems to mean that somehow one needs to do some other code
when trying to make attachments to a remote server. I could not find any
documentation or sample code on that specific problem.

Regards,
Bob

 

[Cor Ligthert [MVP]]

Bob,

That sounds very strange to me and looks just like a firewall or
virusscanner problem, as there are often in this situations.

Cor