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How to check if a file exists on an FTP server

By , 1 Mar 2011
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This is a method that I’ve used in the past to check for file existence on an FTP server.
 
Public Function CheckIfFtpFileExists(ByVal fileUri As String) As Boolean
       Dim request As FtpWebRequest = WebRequest.Create(fileUri)
       request.Credentials = New NetworkCredential("username", "password")
       request.Method = WebRequestMethods.Ftp.GetFileSize
          Try
           Dim response As FtpWebResponse = request.GetResponse()
           ' THE FILE EXISTS
       Catch ex As WebException
            Dim response As FtpWebResponse = ex.Response
            If FtpStatusCode.ActionNotTakenFileUnavailable = response.StatusCode Then
                ' THE FILE DOES NOT EXIST
                Return False
            End If
        End Try
        Return True
    End Function
 
Get’s called like this:
 
If CheckIfFtpFileExists("ftp://ftp.domain.com/filename.txt") Then
        ' Do something
End If

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

Pete Mourfield
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United States United States
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Comments and Discussions

 
GeneralExcellent PinmemberSamarjeet Singh8-Mar-13 6:04 
GeneralC# Version of above code : public bool CheckIfFtpFileExists... PinmemberPravin Patil, Mumbai1-Mar-11 21:33 
GeneralReason for my vote of 5 Interesting solution. I would sugges... PinmemberDrABELL1-Mar-11 9:59 
GeneralDoes not work Pinmemberus47118-Mar-11 1:23 
GeneralRe: Does not work PinmemberFrancis Lamarre19-Jan-12 8:24 

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