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HttpCachePolicy.SetNoTransforms Method

Sets the CacheControl: no-transform directive.

[Visual Basic]
Public Sub SetNoTransforms()
[C#]
public void SetNoTransforms();
[C++]
public: void SetNoTransforms();
[JScript]
public function SetNoTransforms();

Remarks

The no-transform CacheControl setting instructs network caching applications to not modify the document.

As with other restrictions on caching, once SetNoTransforms is set, it cannot be disabled through the HttpCachePolicy interface. This directive 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.

Example

The following example sends the CacheControl: no-transform directive with the current response.

[Visual Basic] 
Response.Cache.SetNoTransforms()
    

[C#] 
Response.Cache.SetNoTransforms();
    

[C++] 
Response->Cache->SetNoTransforms();
    

[JScript] 
Response.Cache.SetNoTransforms()
    

Requirements

Platforms: Windows 2000, Windows XP Professional, Windows Server 2003 family

See Also

HttpCachePolicy Class | HttpCachePolicy Members | System.Web Namespace

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