Expected on IFile classes to identify what IFileStreamManager can provide read/write and monitoring access to files.

Data Providers which expose IFile elements (like IMediaFile for a custom Media File Provider) expose access to stream reads/writes by annotating the class implementing IFile with the FileStreamManagerAttribute attribute, passing the type of a IFileStreamManager as attribute parameter. Orckestra CMS will, via the attribute on the IFile, get the type responsible for stream reads/writes. The class implementing this interface is expected to provide read/write access to the file store being introduced by a file oriented File Provider.

Delegate used to signal changes to a file.

Declare what type of change happened to a file.