The Xceed Streaming Compression control includes only a single property that you may need to set before you use any of the library's methods. The property is named CompressionFormat. By default, the property has been assigned the XceedStandardCompressionFormat object to it, so that the library is ready to compress or decompress this flexible format. If you need to use another compression/decompression format, then you will create an instance of a Compression Format object and assign it to the property. Each Compression Format object has its own properties that you can set to determine how the library should handle the compressing or decompressing of that particular object's format.