Network.Downloadfile always returns "No such file or directory"

I am attempting to use My.Computer.Network.DownloadFile to download a file from an ftp server. Everytime I attempt to download the file using:

My.Computer.Network.DownloadFile("ftp://xxx.xx.xxx.40/datafiles/sm/viewcontrol.ip","c:\rdp\viewcontrol.ip","username","password",false,10000,true)

I receive the following error within the file that is to be downloaded:

Server error message

ISA Server: extended error message :

200 Type set to I.

200 PORT command su开发者_C百科ccessful.

550 /datafiles/sm/viewcontrol.ip: No such file or directory.

I have tried WebClient as well and get the exact same error. I only have this problem in code. The folder and the file name are correct and the user is able to download the file manually using DOS FTP and Internet explorer.

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Answer 1

• Check the filename and full path isn't case sensitive, or are in the correct case.
• Check you are using the exact same username and password, may exist for one user and not another.

Answer 2

The specified Username and Password parameters could be just for HTTP. Try specifying both the username and password in the URL e.g.

ftp://username:password@xxx.xx.xxx.40/datafiles/sm/viewcontrol.ip

Anwser 3

Something strange about the use of absolute paths, try changing your code to include %2f like this:

My.Computer.Network.DownloadFile("ftp://xxx.xx.xxx.40/%2fdatafiles/sm/viewcontrol.ip","c:\rdp\viewcontrol.ip","username","password",false,10000,true)

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In order to get this to work I switched to using FTPWebRequest. Initially, I was getting the same error. However, since the file being downloaded is a text file, I changed the UseBinary property to False and it worked.