HttpRequestCachePolicy Class

Definition

public ref class HttpRequestCachePolicy : System::Net::Cache::RequestCachePolicy

public class HttpRequestCachePolicy : System.Net.Cache.RequestCachePolicy

type HttpRequestCachePolicy = class
    inherit RequestCachePolicy

Public Class HttpRequestCachePolicy
Inherits RequestCachePolicy

Inheritance

Object

RequestCachePolicy

HttpRequestCachePolicy

Examples

The following code example creates a default cache policy for the application domain, and overrides it for a request.

// The following method demonstrates overriding the
// caching policy for a request.
public static WebResponse GetResponseNoCache(Uri uri)
{
    // Set a default policy level for the "http:" and "https" schemes.
    HttpRequestCachePolicy policy = new HttpRequestCachePolicy(HttpRequestCacheLevel.Default);
    HttpWebRequest.DefaultCachePolicy = policy;
    // Create the request.
    WebRequest request = WebRequest.Create(uri);
    // Define a cache policy for this request only.
    HttpRequestCachePolicy noCachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);
    request.CachePolicy = noCachePolicy;
    WebResponse response = request.GetResponse();
    Console.WriteLine("IsFromCache? {0}", response.IsFromCache);
    return response;
}

Remarks

You can specify a default cache policy for your application by using the DefaultCachePolicy property or the application or machine configuration files. For more information, see <requestCaching> Element (Network Settings).

You can specify the cache policy for an individual request by using the CachePolicy property.

Caching for Web services is not supported.

See also

• Cache Management for Network Applications