FTP directory partial listing with wildcards

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The most recent update to the FTP specification (RFC 3659) explicitly forbids it. From section 2.2.2 of that specification, titled “Wildcarding” (emphasis mine):

For the commands defined in this specification, all pathnames are to
be treated literally. That is, for a pathname given as a parameter to
a command, the file whose name is identical to the pathname given is
implied. No characters from the pathname may be treated as special or
“magic”, thus no pattern matching (other than for exact equality)
between the pathname given and the files present in the NVFS of the
server-FTP is permitted.

Clients that desire some form of pattern
matching functionality must obtain a listing of the relevant
directory, or directories, and implement their own file name
selection procedures.

That said, if your server supports it, you could still use the FtpWebRequest class, but you’d have to process the response yourself to handle the list of items, as the .NET classes won’t understand your server-specific extensions.

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