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Old December 6th, 2006, 06:33 PM
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Default Uploading Text File to FTP server in vb.net

Hi folks,

I am trying to upload a text file to a FTP server using VB.net Windows’s application.

I used the following code:

        Imports System.IO
        Imports System.Net
        Imports System.Text

        Dim localFile As String = "C:\Yserver.txt"
        Dim remoteFile As String = "ftp://ftpSERVER/test12345.txt"
        Dim username As String = "user"
        Dim password As String = "pwd"

        Dim sourceStream As New StreamReader(localFile)
        Dim fileContents As Byte() = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd())

        'Get the object used to communicate with the server.
        Dim Request As System.Net.FtpWebRequest = FtpWebRequest.Create(remoteFile)

        ' Setting Properties
        Request.Credentials = New NetworkCredential(username, password)
        Request.Method = System.Net.WebRequestMethods.Ftp.UploadFile
        Request.Proxy = Nothing
        Request.KeepAlive = False

        ' Uploading file
        Request.GetRequestStream.Write(fileContents, 0, fileContents.Length)
        MsgBox("File Uploaded Successfully !!!")

When I execute these, I am getting following error

System.Net.WebException was caught
Message="The remote server returned an error: (501) Syntax error in parameters or arguments."

Please help me to overcome this.

Old December 7th, 2006, 11:12 AM
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Moreover i m trying to connect to AS400 server , No SSL ,No proxy server..

Looking forward for ur Answer !!!
Old December 13th, 2006, 06:19 AM
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I will look into this for you later Wednesday.

What is in YServer.txt? Is it really a text file? If it's small enough please post the contents.

Old July 27th, 2014, 05:16 PM
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In response to your question above. It does not matter what the contents of a file are. There is an error in the conection. check all the login details are correct for the FTP host.

Also if your uploading a file or any sort you need to make sure the file name and type are the same as the designated line of code.

example code to catch errors;

code to conect
code to attempt upload
code to close conection
catch ex exception
msgbox("Didnt work!")
code to close connection - disregard and try again
end try

(code may be wrong as im lazy and use memory only)
Old July 29th, 2014, 02:02 AM
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The exception states what is wrong, it is a 501, this typically means that the server receiving the message had an issue processing your request. Are you sure the server you are connecting to can understand ftp via http. Ftp is a protocol and the server you are sending the web request to must be able to understand it. It is also standard practice to send vague cryptic message when internal errors arise so in my opinion the best way to determine what the exception is, is to have the ftp server owner review logs to determine the root cause.

Last edited by mmorgan30; July 29th, 2014 at 02:08 AM..

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