Xceed Real-Time Zip for Silverlight

Major features

• Lets developers add zip and unzip capabilities to any Silverlight 5, 4 or 3 application, quickly and easily. Compresses and uncompresses files without resorting to intermediate disk/memory storage or temporary files, making it the perfect match for Silverlight: it needs no local write access.
• The product's main ZipWriter and ZipReader classes use any seekable or non-seekable Stream-based object as the target or source Zip archive, respectively, for complete flexibility and ¿on-the-fly¿ compression/decompression.
• Lightweight libraries.
• Compression starts as soon as data has been received: no waiting for all of the files, or even for complete files. Doesn¿t need to know in advance the number or size of files.
• Transfer of the Zip archive over a network can begin immediately, and the remainder of the archive becomes available as it is compressed.
• Secure: Because no temporary files are used while creating a Zip file, there is less chance of unauthorised access or modification of files during the Zip creation process
• Archived files are extracted and available instantly for further processing even if the component is still receiving the Zip archive.
• The size or number of files in a Zip archive has absolutely no impact on memory and disk-space requirements.
• Just a few methods and properties are needed to perform powerful Zip compression/extraction.
• Supports the BZip2, BWT, Deflate, Deflate64 and PPMd compression algorithms.
• AES encryption and decryption are supported for maximum WinZip compatibility.
• The only library to provide WinZip 12 compatibility, supporting the LZMA algorithm for improved compression in certain situations. Note: Zip files using WinZip 12¿s special JPEG recompression feature are not supported.
• UTF-8 character encoding in headers for improved support of international characters in filenames and comments is provided.
• Events and properties to monitor and control the Zip writing/reading processes are also provided.
• Reads the Xceed Unicode Extra Header, so it can now preserve filenames with Unicode characters. Very useful for handling international characters.
• Compatible with older zip tools.
• The ZipWriter can generate uncompressed zip files that the product's ZipReader can read increasing flexibility (combines the Deflate format and no compression).
• Works seamlessly with Xceed Upload for Silverlight.

.NET technology

• 100% managed code written in C#. (Complete source code available in the Blueprint Edition of Xceed Real-Time Zip for Silverlight.)
• Object-oriented design created specifically for Silverlight.
• Seamless integration with the Silverlight base class libraries.
• All error handling works through Silverlight exception classes.
• CLS compliant (Common Language Specification).
• Does not use unsafe blocks for minimal permission requirements.
• Documentation fully integrated into Visual Studio
• VB.NET and C# sample applications.