The FTP server's current working folder is used by the FTP server as the base folder from which to perform file operations such as listing or obtaining folder contents, receiving, sending and deleting files, changing the current folder, etc. When using relative paths, the current working folder is used as the root path. The Xceed FTP Library allows you to find out what the FTP server's current working folder is via the CurrentFolder property, and allows you to change it via the ChangeCurrentFolder and ChangeToParentFolder methods.