A client can use this class to update the server cache model. This is useful in both session and stateless requests.

In session-based requests, the server automatically maintains a client cache model for the image information it sends. The client might want to update the server cache model to specify that in the case of loss of information it will request the server to resend the information again.

In stateless requests, the server doesn't maintain a cache model, so it is the client' responsibility to tell the server what information it already has. A stateless client will fill the cache fields with the image information it has so the server won't send this information in its response.

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

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