基于ASP.NET的Rss开发包：ASP.NET RSS Toolkit

Please check out ASP.NET RSS Toolkit, one of my latest projects.

The RSS toolkit includes support for consuming as well as publishing RSS feeds in ASP.NET applications.  Features include:

• RSS Data Source control to consume feeds in ASP.NET applications
  • Works with ASP.NET data bound controls
  • Implements schema to generate columns at design time
  • Supports auto-generation of columns at runtime (via ICustomTypeDescriptor implementation)
• Caching of downloaded feeds both in-memory and on-disk (persisted across process restarts)
• Generation of strongly typed classes for RSS feeds (including strongly typed channel, items, image, handler) based on a RSS URL (the toolkit recognizes RSS and RDF feeds) or a file containing RSS definition.  Allows programmatically download (and create) RSS channels using strongly-typed classes. The toolkit includes:
  • Stand-alone command line RSS compiler
  • Build provider for .rssdl file (containing the list of feed URLs)
  • Build provider for .rss file (containing RSS XML)
• Support for generation of RSS feeds in ASP.NET application including:
  • RSS HTTP handler (strongly typed HTTP handlers are generated automatically by the build providers) to generate the feed.
  • RSS Hyper Link control (that can point to RSS HTTP handler) to create RSS links
  • Optional secure encoding of user name into query string to allow generation of personalized feeds
• Set of classes for programmatic consumption  and generation of RSS feed in a late-bound way, without using strongly typed generated classes

The toolkit is packaged as an assembly (DLL) that can be either placed in GAC or in ‘bin’ directory of a web application.  It is also usable from client (including WinForms) applications.

 

RSS Toolkit works in Medium Trust (RssToolkit.dll Assembly either in GAC or in ‘bin’) with the following caveats:

• If the ASP.NET application consumes RSS feeds, the trust level must be configured to allow outbound HTTP requests.
• To take advantage of disk caching, there must be a directory (configurable via AppSettings["rssTempDir"]) where the trust level policy would allow write access.  However, disk caching is optional.

Complete sources are included in the package.