Xceed Upload for Silverlight lets you quickly and easily add upload capabilities to any Silverlight application. All upload operations are asynchronous, meaning that the Web page hosting your application remains perfectly responsive and usable throughout the transfer. Xceed Upload for Silverlight supports uploading multiple files in a single transaction, and supports GZip and Deflate, with controllable compression level. Xceed Upload for Silverlight provides options for customizing the HTTP request and Base64 encoding, as well as a rich set of events that lets your application monitor and control every step of an upload operation. Xceed Upload for Silverlight includes Xceed Http Server Tools for ASP.NET, which gives you classes to make dealing with compressed/encoded files as easy as working with regular files. Vanguard Subscription provides updates to the latest versions as they are released, as well as priority support by telephone and dedicated email address. Blueprint Edition includes the product's C# source code as well as a 1-year Vanguard subscription including updates to the source code.