.net - Can we unzip file in FTP server using C#

Question

Can I extract the ZIP file in FTP and place this extracted file on the same location using C#?

Answer 1

It's not possible.

There's no API in the FTP protocol to un-ZIP a file on a server.

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Though, it's not uncommon that one, in addition to an FTP access, have also an SSH access. If that's the case, you can connect with the SSH and execute the unzip shell command (or similar) on the server to decompress the files.
See C# send a simple SSH command.

If you need, you can then download the extracted files using the FTP protocol (Though if you have the SSH access, you will also have an SFTP access. Then, use the SFTP instead of the FTP.).

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Some (very few) FTP servers offer an API to execute an arbitrary shell (or other) commands using the SITE EXEC command (or similar). But that's really very rare. You can use this API the same way as the SSH above.

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If you want to download and unzip the file locally, you can do it in-memory, without storing the ZIP file to physical (temporary) file. For an example, see How to import data from a ZIP file stored on FTP server to database in C#.