HttpCachePolicy::SetNoTransforms Method
Sets the Cache-Control: no-transform HTTP header.
Assembly: System.Web (in System.Web.dll)
The Cache-Control: no-transform HTTP header instructs network caching applications not to modify the document.
The Cache-Control: no-transform HTTP header prevents downstream proxy servers from changing any header values specified by the Content-Encoding, Content-Range, or Content-Type headers (this includes the entity body). For example, it prevents proxies from converting GIF images to PNG.
As with other restrictions on caching, once SetNoTransforms is called, the Cache-Control: no-transform HTTP header cannot be disabled through the HttpCachePolicy interface.
SetNoTransforms is introduced in the .NET Framework version 3.5. For more information, see .NET Framework 3.5 Architecture.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.