Send Memorystream As An Email Attachment

Im generating a PDF file. Normally I send this to the user using a .ashx file, where the user can directly download it from his browser (see that code below).

Protected Function getfile() As MemoryStream
Dim stream As MemoryStream = New MemoryStream
If document.PageCount > 0 Then
document.Save(stream, False)
'Context.Response.Clear()
'Context.Response.ContentType = "application/pdf"
'Context.Response.AddHeader("Content-disposition", "attachment;filename=TicketEZ_tickets_" + eventname + ".pdf")
'Context.Response.AddHeader("content-length", stream.Length.ToString)
'Context.Response.BinaryWrite(stream.ToArray)
'Context.Response.Flush()
Return stream
stream.Close()
'Context.Response.End()
End If

But now I want to send this file as an email attachment...how can I do that? I tried this, but that doesnt work...(Value of type 'System.IO.MemoryStream' cannot be converted to 'String')

Dim att As New System.Net.Mail.Attachment(getfile)
Msg.Attachments.Add(att)