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.NET Forum / Languages / VB.NET / July 2008

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Upload File via FTP using VB.Net and Receiving "Not Logged In" Error??

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TC - 29 Jul 2008 13:10 GMT
Hey All,

I'm trying to upload files via FTP and I'm using FtpWebRequest and
WebClient.

Unfortunately, I'm receiving a "Not Logged In" error.

I know that others have seen this as I've seen postings but I haven't seen
any clear resolution.

Does anyone have a code snippet that works?

Can someone please advise?

Thanks,

TC
kimiraikkonen - 29 Jul 2008 19:32 GMT
> Hey All,
>
[quoted text clipped - 13 lines]
>
> TC

You can use My namepsace to upload to FTP server also by passing
credentials if required in the same code syntax:

"My.Computer.Network.UploadFile" method
http://msdn.microsoft.com/en-us/library/dfkdh7eb.aspx

Hope this helps,

Onur Güzel
Steve - 29 Jul 2008 20:09 GMT
> Hey All,
>
[quoted text clipped - 13 lines]
>
> TC

I'm not sure if this is what you are looking for, but this is how I am
uploading a file to my ftp site.

       'Variables
       Dim local_file As String = path & filename
       Dim remote_file As String = ftpsite & filename
       Dim cls_request As System.Net.FtpWebRequest =
DirectCast(System.Net.WebRequest.Create(remote_file),
System.Net.FtpWebRequest)
       Dim user_name As String = user
       Dim password As String = password

       'Establish credentials for logging into ftp site
       cls_request.Credentials = New
System.Net.NetworkCredential(user_name, password)

       'Set properties
       cls_request.KeepAlive = False
       cls_request.Proxy = Nothing
       cls_request.Method =
System.Net.WebRequestMethods.Ftp.UploadFile
       cls_request.UseBinary = True

       'Read in the file
       Dim b_file() As Byte = System.IO.File.ReadAllBytes(local_file)

       'Upload the file
       Dim cls_stream As System.IO.Stream =
cls_request.GetRequestStream()
       cls_stream.Write(b_file, 0, b_file.Length)
       cls_stream.Close()
       cls_stream.Dispose()

This does overwrite files if they already exist.

Hope this helps,

Steve
TC - 30 Jul 2008 01:36 GMT
Hey Steve,

When I try to get the stream, it fails with this error:

The remote server returned an error: (550) File unavailable (e.g., file not
found, no access).

Any ideas?

I'm wondering if the URL I was given is the culprit.  It is:

ftp://myserverurl.com/../companyname/Incoming/Orders/

Would the "/../" cause problems?

Thanks,

Todd

>> Hey All,
>>
[quoted text clipped - 53 lines]
>
> Steve
TC - 30 Jul 2008 02:22 GMT
Got it to work!

Turns out there was a problem with the URL that I was given.  Once I had the
appropriate syntax, I was OK.

By the way, is there any reason one would use:

My.Computer.Network.UploadFile

vs.

the more verbose FtpWebRequest?

It seems that the My.Computer.Network.UploadFile method is very concise and
elegant.  However, if more control is required, the latter may be a better
choice.  But if all one really needs to do is upload, wouldn't the first be
a better choice?

Thanks,

Todd

> Hey All,
>
[quoted text clipped - 13 lines]
>
> TC
Steve - 30 Jul 2008 19:24 GMT
> Got it to work!
>
[quoted text clipped - 35 lines]
>
> > TC

I'm not to sure about that.  I have been using the FtpWebRequest
method which has been working well for me.  Maybe a MSFT MVP could
help you on that one.

Glad to know if worked for you.

Steve

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