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HttpCacheAgeControl Enumeration

Specifies the meaning of time values that control caching behavior for resources obtained using HttpWebRequest objects.

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

public enum HttpCacheAgeControl

Member nameDescription
MaxAgeContent can be taken from the cache until it is older than the age specified with this value.
MaxAgeAndMaxStaleMaxAge and MaxStale.
MaxAgeAndMinFreshMaxAge and MinFresh.
MaxStaleContent can be taken from the cache after it has expired, until the time specified with this value elapses.
MinFreshContent can be taken from the cache if the time remaining before expiration is greater than or equal to the time specified with this value.
NoneFor internal use only. The Framework will throw an ArgumentException if you try to use this member.

This enumeration is used by members of the HttpRequestCachePolicy class to configure the time values for cache policies.

The following code example creates a policy based on MaxAgeAndMinFresh.

public static HttpRequestCachePolicy CreateFreshAndAgePolicy(TimeSpan freshMinimum, TimeSpan ageMaximum)
{
    HttpRequestCachePolicy policy = 
        new HttpRequestCachePolicy(HttpCacheAgeControl.MaxAgeAndMinFresh, ageMaximum, freshMinimum); 
    Console.WriteLine(policy.ToString());
    return 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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