Thanks Cerebrus! I haven't made use of FileStream and MemoryStream
much in the past - I changed from using the filestream in my function
to using memorystream. I haven't tested it a lot yet, but so far
seems to be working fine. Thanks for the help.
Public Class WebFunctions
Public Function ftpDownload(ByVal strFileLocation As String, ByVal
strFilename As String, _
ByVal strServer As String, ByVal
strUsername As String, ByVal strPassword As String) As MemoryStream
Dim ms As MemoryStream
Try
Dim ftp As FtpWebRequest = CType(FtpWebRequest.Create
(strServer & strFileLocation & strFilename), FtpWebRequest)
ftp.Credentials = New NetworkCredential(strUsername,
strPassword)
ftp.KeepAlive = False
ftp.UseBinary = True
ftp.Method = WebRequestMethods.Ftp.DownloadFile
Using response As FtpWebResponse = CType(ftp.GetResponse,
FtpWebResponse)
Using responseStream As IO.Stream =
response.GetResponseStream
Using msTemp As New IO.MemoryStream()
Dim buffer(2047) As Byte
Dim read As Integer = 0
Do
read = responseStream.Read(buffer, 0,
buffer.Length)
msTemp.Write(buffer, 0, read)
Loop Until read = 0
responseStream.Close()
ms = New MemoryStream
ms.Write(msTemp.ToArray, 0, msTemp.Length)
msTemp.Flush()
msTemp.Close()
End Using
responseStream.Close()
End Using
response.Close()
End Using
Return ms
Catch ex As Exception
MsgBox(ex)
End Try
End Function
On Oct 23, 3:28 am, Cerebrus <[email protected]> wrote:
> On Oct 22, 10:03 pm, Sheldon <[email protected]> wrote:
>
> > I'm able to get the file downloaded, but am drawing a blank as to how
> > to download it as a filestream instead of a physical file on the
> > user's hard drive.
>
> A FileStream *is* a Stream of bytes wrapped around a File on the disk.
> They are not mutually exclusive objects.
>
> > Using the code listed below, I'd like to not create the file "C:\temp
> > \temp.123", but rather return the file as a filestream.Can anyone give
> > me some pointers on this? Maybe I'm going about it the wrong way.
> > Ultimately what I will be doing is downloading a file from the FTP
> > site, passing it to a file viewer program for display. Once the user
> > closes the viewer, the download file should be discarded. If I am
> > dealing with physical files on the user's hard drive, then I also have
> > to make sure my file viewer deletes the downloaded file before
> > closing; I figured it would be easier to just pass the downloaded file
> > around as an object in memory.
>
> Use a MemoryStream instead of a FileStream.
