Xceed Zip for .NET

Major features

• Create new zip files or update existing zip files on disk or in memory
• WinZip 12 compatible: WinZip 12 compatibility, supporting the LZMA algorithm for improved compression (Zip files using WinZip 12's special JPEG recompression feature are not supported)
• Zip or unzip to and from disks, memory or isolated storage (Improved in v2.0)
• Read, write and update zip files split into multiple parts (New in V2.0)
• Read, write and update zip files that span multiple disks (New in V2.0)
• Create powerful fully customized self-extracting zip files (New in V2.0)
• Supports the new Deflate64 compression method (New in V2.0)
• List contents of a zip file with complete file specifications
• Compress or decompress any .NET stream
• Compress and decompress byte arrays completely in memory
• Copy, move, rename, delete and change attributes of files and folders in a zip file, on disk, in memory or in isolated storage (Improved in v2.0)
• Copy, move, rename, delete and change attributes of files and folders on disk
• Zip password encryption
• One-line shortcut classes for basic zip file and compression operations
• Fully extensible classes so you can customize the library's functionality as needed
• Information-rich status report events with percentages, byte and file counts
• Programmable filter system to limit processing to specific files or folders, with built-in filters for file attribute, size, date timestamp and filenames. Create your own custom filters as needed.

Other features

• Zip password encryption on a per-file basis
• Recursively zip or unzip entire directories and their contents
• Control the path information stored in the zip file for each file or folder
• Zip or unzip only files newer than those already in the zip file or destination folder
• Overwrite files only in certain conditions
• Split zip file can use the Pkware or Xceed naming convention for each zip file part or create your own custom naming convention
• Split zip file parts can be written to different folders
• Triggers only the events your application subscribes to for increased performance
• Get and set individual file comments or the global zip file comment
• Supports different encryption passwords for each file
• Controllable compression levels and methods
• Zip files currently open for write operations by other processes
• Supports long filenames and UNC paths
• Ability to preview which files will end up being processed
• Process system and hidden files, overwrite read-only files

Self-extracting zip file features (New in V2.0)

• Create new self-extracting zip files or transform already existing zip files into self-extracting zip files.
• Self-extracting zip files can span multiple disks
• Creates 32-bit self-extracting zip files that work on all Windows 95, 98, ME, NT, 2000, XP operating systems or 16-bit self-extracting zip files that work on Windows 3.x as well
• Update and reconfigure an existing self-extracting zip file
• Customizable introduction message and dialog box titles
• Display a license agreement with configurable accept and refuse buttons
• Customize all other messages, prompts and button captions
• Customize the self-extracting zip file's application icon
• Set the default unzipping folder
• Allow user to select an alternate unzipping folder
• Request a password whenever an encrypted file is encountered
• The user can enter the decryption password or skip the file if they don't have the password for the file
• Display a text file after successfully unzipping files
• Customizable overwrite behavior with dialog box offering the user various overwrite options
• Display unzipping status
• User interaction and dialogs can be selectively shut off for quiet operation