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WebResponse.IsFromCache Property

Gets a Boolean value that indicates whether this response was obtained from the cache.

Namespace:  System.Net
Assembly:  System (in System.dll)

'Declaration
Public Overridable ReadOnly Property IsFromCache As Boolean

Property Value

Type: System.Boolean
true if the response was taken from the cache; otherwise, false.

The current cache policy and the presence of the requested resource in the cache determine whether a response can be retrieved from the cache. Using cached responses usually improves application performance, but there is a risk that the response in the cache does not match the response on the server. Use the CachePolicy property to set and the RequestCachePolicy class to enumerate the current caching policy.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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