How to calculate size of directory on FTP?

Question

How to calculate size of FTP folder? Do you know any tool or programmatic way in C#?

Answer 1

You could send the LIST command which should give you a list of files in the directory and some info about them (fairly certain the size is included), which you could then parse out and add up.

Depends on how you connect to the server, but if you're useing the WebRequest.Ftp class there's the ListDirectoryDetails method to do this. See here for details and here for some sample code.

Just be aware, if you want to have the total size including all subdirectories, I think you'll have to enter each subdirectory and call it recursively so it could be quite slow. It can be quite slow thought so normally I'd recommended, if possible, to have a script on the server calculate the size and return the result in some way (possibly storing it in a file you could download and read).

Edit: Or if you just mean that you'd be happy with a tool that does it for you, I think FlashFXP does it and probably other advanced FTP clients will as well. Or if it's a unix server I have a vague memory that you could just login and type ls -laR or something to get a recursive directory listing.

Answer 2

If you just need the work done, then SmartFTP might help you, it also has a PHP and ASP script to get the total folder size by recursively going through all the files.