Xceed Upload for Silverlight

Quickly and easily add upload capabilities to any Silverlight 4 or 3 application.
	Current version for Silverlight 4: 3.1
	Current version for Silverlight 3: 2.2
	Platform: Silverlight 4 / 3

Xceed Upload for Silverlight is available in a variety of license quantities through a subscription that delivers much more than just a perpetual license for versions received during the subscription. You also get a year of these great services: expert priority support and access to new versions, new features, and bug fixes. Additional years can be added at a discounted price at the time of purchase or before the subscription expires; a new subscription is required after it has expired.

Xceed Upload for Silverlight lets you quickly and easily add multi-file upload capabilities with no limits on the amount of data being transferred to any Silverlight 4 or 3 application. All upload operations are asynchronous, meaning that the Web page hosting your application remains perfectly responsive and usable throughout the transfer. A great alternative to ASP.NET and AJAX.

Supports uploading multiple files in a single transaction, and also solves a problem inherent in the current version of Microsoft’s Silverlight technology by gathering field contents in a Silverlight form and then formatting them into a standard request that any modern Web server can understand for subsequent processing.

Being based on Microsoft’s Silverlight technology, Xceed Upload for Silverlight lets you seamlessly integrate uploaders into the beautiful and compelling end-user experience that Silverlight is all about, one that will run in multiple browser types on multiple OS types.

Lets you compress data as it is being uploaded. Supports GZip and Deflate, with controllable compression level. 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.

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. Also simplifies working with compressed/encoded strings.

Features

Major features	Lets you quickly and easily add multi-file upload capabilities to any Microsoft Silverlight 4 or 3 application. Upload images and other files directly from Silverlight-hosting Web pages. All upload operations are asynchronous, so the hosting Web page remains perfectly responsive and usable throughout the transfer. Uploaders can process multiple files a single transaction. Uploading field contents and strings from your Silverlight forms to the Web server is simple: fields are automatically gathered and formatted into a standard request. Xceed's implementation of the HttpWebRequest interface supports the HTTP 1.1 “chunked” format and uses Silverlight Sockets to provide the ability to upload unlimited amounts of data in a single operation. Lets you designate any HttpWebRequest implementation for transfers if you want to use a special communication algorithm. Helps you deliver a beautiful Silverlight 4 or 3 experience to your end-users, such as displaying progress information. Lets you compress data as it is being uploaded. Supports GZip and Deflate, with controllable compression level. Rich events let your application monitor and control every step of an upload operation. Several versions of the upload methods are provided: from simple “fire-and-forget” versions to ones letting you control everything. Static and instance versions let you use the component to suit your needs. Uploads can be deferred, letting your application gather files and strings and then perform the actual transfer when ready. The HTTP requests produced by the component use the standard MIME format for uploading data through the “multipart/form-data” content type, meaning any modern Web server should be able to handle the data. Custom HTTP request headers (main and item headers) can be set. The boundary used in the HTTP request can be specified. Base64 encoding is available to support Web browsers that do not allow the upload of non-ASCII data. An alternative to ASP.NET and AJAX.
Included helper server classes	Xceed Http Server Tools for ASP.NET is provided to help deal with compressed/encoded data. The UploadedFile and UploadedFiles classes seamlessly handle compressed/encoded files: because these classes are based on the FileSystem Core, they make dealing with such files as easy as working with regular files. The UploadedString class helps simplify handling compressed/encoded strings.
Other features	Client-side execution: no server-side component or code required if compression or encoding isn’t used. Tested with IIS, but is compatible with any HTTP 1.1 standards-compliant Web server. Does not trigger a page refresh during or after an upload. Supports Unicode filenames.
.NET technology	Created with Microsoft Silverlight 4 and 3, will be updated for future versions of Silverlight as they become available. Written entirely in C#. Complete source code is available through a Blueprint subscription. Based on a flexible and extensible object model. Can be used in conjunction with the MVVM and MVC design and architectural patterns. Comprehensive documentation fully integrated into Visual Studio is provided. Includes a variety of VB.NET, C#, and JavaScript sample applications to get you started.
Live demonstration	Try the online demo to see it in action, live.