TheSetETagFromFileDependencies method sets the ETag header by retrieving the last modified time stamps of all files on which the handler is dependent, combining all file names and time stamps into a single string, then hashing that string into a single digest that is used as the ETag.
Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.