RequestCacheLevel Enum

Overview

The RequestCacheLevel enumeration specifies the caching behavior for a request made by the System.Net.WebRequest class and its derivatives.

Namespace: System.Net

Assembly: System.dll

Members

Name	Value	Description
`BypassCache`	0	Never use the cache.
`CacheOnly`	1	Use only the cache; fail if the item is not cached.
`CacheIfAvailable`	2	Use the cache if the item exists, otherwise retrieve it from the network.
`Revalidate`	3	Validate the cached entry with the server before using it.
`Default`	4	Determine the caching behavior based on the request's URI scheme.
`NoCacheNoStore`	5	Do not cache and do not store the response locally.
`Refresh`	6	Retrieve a fresh copy from the server, updating the cache.
`CacheOrNextRequest`	7	Use the cached item if present; otherwise, store the next response in the cache.

Examples

Below is a simple console application that demonstrates how to set the RequestCacheLevel for a WebRequest object.

using System;
using System.Net;

class Program
{
    static void Main()
    {
        var url = "https://example.com/api/data";
        var request = WebRequest.Create(url);
        request.CachePolicy = new HttpRequestCachePolicy(RequestCacheLevel.CacheIfAvailable);
        using var response = request.GetResponse();
        Console.WriteLine($"Response received from {(response.ResponseUri)}");
    }
}
        