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using System;
using System.Collections;
using System.Web;

public static class CacheHelper
{
    /// <summary>
    /// 獲取數據緩存
    /// </summary>
    /// <param name="CacheKey">鍵</param>
    public static object GetCache(string CacheKey)
    {
        System.Web.Caching.Cache objCache = HttpRuntime.Cache;
        return objCache[CacheKey];
    }

    /// <summary>
    /// 設置數據緩存
    /// </summary>
    public static void SetCache(string CacheKey, object objObject)
    {
        System.Web.Caching.Cache objCache = HttpRuntime.Cache;
        objCache.Insert(CacheKey, objObject);
    }

    /// <summary>
    /// 設置數據緩存
    /// </summary>
    public static void SetCache(string CacheKey, object objObject, TimeSpan Timeout)
    {
        System.Web.Caching.Cache objCache = HttpRuntime.Cache;
        objCache.Insert(CacheKey, objObject, null, DateTime.MaxValue, Timeout, System.Web.Caching.CacheItemPriority.NotRemovable, null);
    }

    /// <summary>
    /// 設置數據緩存
    /// </summary>
    public static void SetCache(string CacheKey, object objObject, DateTime absoluteExpiration, TimeSpan slidingExpiration)
    {
        System.Web.Caching.Cache objCache = HttpRuntime.Cache;
        objCache.Insert(CacheKey, objObject, null, absoluteExpiration, slidingExpiration);
    }

    /// <summary>
    /// 移除指定數據緩存
    /// </summary>
    public static void RemoveAllCache(string CacheKey)
    {
        System.Web.Caching.Cache _cache = HttpRuntime.Cache;
        _cache.Remove(CacheKey);
    }

    /// <summary>
    /// 移除全部緩存
    /// </summary>
    public static void RemoveAllCache()
    {
        System.Web.Caching.Cache _cache = HttpRuntime.Cache;
        IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
        while (CacheEnum.MoveNext())
        {
            _cache.Remove(CacheEnum.Key.ToString());
        }
    }
}