edtFTPnet/Free - Open-source FTP component for .NET | Download
 Data Types

The two most common data types in usage are ASCII and binary.

ASCII is the default data type, and is intended for the transfer of text files. A line of text is followed by <CRLF>. Note that different operating systems use different end of line terminators.

Binary type (known as IMAGE in FTP) is used to transfer binary files. A byte-by-byte copy is made of the source file. Graphical images, video and executable files are all binary files. If they are transferred as ASCII, they will be corrupted.

Next: Session Commands