Question

Am trying to add an attachment to mail in asp.net VB.

I could send mail fine until I added the attachment code,

Dim attch As Attachment = New Attachment("http://sitehere.com/Documents/file.jpg")
mail.Attachments.Add(attch)

I am getting the error URI formats are not supported.

Any ideas why that is and what I can do about it?

Answer 1

The Attachment class expects either a path to a file on the file system, or a Stream.

Try:

Dim data As Byte() = New WebClient().DownloadData("http://sitehere.com/Documents/file.jpg")
Dim attachment As New Attachment(New MemoryStream(data), "file.jpg")

That’s me doing my best to translate from C# to VB.NET so the syntax might not be 100% correct, but that’s the general idea. That will download the data into a byte array, then create a memory stream from those bytes and pass that to the Attachment constructor.