HttpCachePolicy.SetNoTransforms Method

Sets the Cache-Control: no-transform HTTP header.

Namespace: System.Web
Assembly: System.Web (in system.web.dll)

public:
void SetNoTransforms ()
public void SetNoTransforms ()
public function SetNoTransforms ()
Not applicable.

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.

The following code example demonstrates how to send the Cache-Control: no-transform directive with the current response.

No code example is currently available or this language may not be supported.
get_Response().get_Cache().SetNoTransforms();

Response.Cache.SetNoTransforms()
    

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.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

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