如何清除asp.net mvc 4.6.1中的所有输出缓存

Question

我想清除控制器中的所有输出缓存。项目是asp.net MVC 4.6.1我使用了以下代码，但由于“ ci.GetValue（HttpRuntime.Cache）作为CacheStoreProvider”而面临编译错误。如何清除控制器中的所有输出缓存？

        var runtimeType = typeof(System.Web.Caching.Cache);
        var ci = runtimeType.GetProperty(
           "InternalCache",
           BindingFlags.Instance | BindingFlags.NonPublic);

        var cache = ci.GetValue(HttpRuntime.Cache) as CacheStoreProvider;

        var enumerator = cache.GetEnumerator();

        List<string> keys = new List<string>();

        while (enumerator.MoveNext())
        {
            keys.Add(enumerator.Key.ToString());
        }
        foreach (string key in keys)
        {
            cache.Remove(key);
        }

Answer 1

    public static void ClearOutputCache()
    {

        var runtimeType = typeof(HttpRuntime);

        var ci = runtimeType.GetProperty(
           "CacheInternal",
           BindingFlags.NonPublic | BindingFlags.Static);

        var cache = ci.GetValue(ci, new object[0]);

        var cachesInfo = cache.GetType().GetField(
            "_caches",
            BindingFlags.NonPublic | BindingFlags.Instance);
        var cacheEntries = cachesInfo.GetValue(cache);

        var outputCacheEntries = new List<object>();

        foreach (Object singleCache in cacheEntries as Array)
        {
            var singleCacheInfo =
            singleCache.GetType().GetField("_entries",
               BindingFlags.NonPublic | BindingFlags.Instance);
            var entries = singleCacheInfo.GetValue(singleCache);

            foreach (DictionaryEntry cacheEntry in entries as Hashtable)
            {
                var cacheEntryInfo = cacheEntry.Value.GetType().GetField("_value",
                   BindingFlags.NonPublic | BindingFlags.Instance);
                var value = cacheEntryInfo.GetValue(cacheEntry.Value);
                if (value.GetType().Name == "CachedRawResponse")
                {
                    var key = (string)cacheEntry.Value.GetType().BaseType.GetField("_key", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(cacheEntry.Value);
                    key = key.Substring(key.IndexOf("/"));
                    outputCacheEntries.Add(key);
                }
            }
        }
        foreach (string key in outputCacheEntries)
        {  
            HttpResponse.RemoveOutputCacheItem(key);
        }
    }