Conris.Utility/Data.Caches.cs

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using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
using System.Web;
using System.Web.Caching;

namespace Conris.Utility.Data
{
    public class Caches
    {
        /// <summary>
        /// 移除键中带某关键字的缓存
        /// </summary>
        /// <param name="keyInclude">缓存键中所含关键字</param>
        public static void RemoveMultiCache(string keyInclude)
        {
            IDictionaryEnumerator CacheEnum = HttpRuntime.Cache.GetEnumerator();
            while (CacheEnum.MoveNext())
            {
                if (CacheEnum.Key.ToString().IndexOf(keyInclude.ToString()) >= 0)
                    HttpRuntime.Cache.Remove(CacheEnum.Key.ToString());
            }
        }

        /// <summary>
        /// 添加需在程序中移除的缓存
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        public static object TryAddCache(string key, object value, CacheItemPriority priority)
        {
            if (HttpRuntime.Cache[key] == null && value != null)
                return HttpRuntime.Cache.Add(key, value, null, Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration, priority, null);
            else
                return null;
        }

        /// <summary>
        /// 添加需在程序中移除的缓存,指定时间过期
        /// </summary>
        /// <param name="key">键</param>
        /// <param name="value">值</param>
        public static object TryAddCache(string key, object value, TimeSpan slidingExpiration, CacheItemPriority priority)
        {
            if (HttpRuntime.Cache[key] == null && value != null)
                return HttpRuntime.Cache.Add(key, value, null, Cache.NoAbsoluteExpiration, slidingExpiration, priority, null);
            else
                return null;
        }

        /// <summary>
        /// 移除某个缓存
        /// </summary>
        /// <param name="key">键</param>
        public static object TryRemoveCache(string key)
        {
            if (HttpRuntime.Cache[key] != null)
                return HttpRuntime.Cache.Remove(key);
            else