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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Caching;
using System.Web.Hosting;
namespace MemoryCacheManagerHelper
{
/// <summary>
/// Caching 的摘要说明
/// </summary>
public class MemoryCacheManagerWeb
{
/// <summary>
/// 获取当前应用程序指定CacheKey的Cache值
/// </summary>
/// <param name="CacheKey">
/// <returns></returns>y
public object GetCache(string CacheKey)
{
System.Web.Caching.Cache objCache = HttpRuntime.Cache;
return objCache[CacheKey];
}
//public T Get<T>(string key)
//{
// return (T)Cache[key];
//}
/// <summary>
/// 设置当前应用程序指定CacheKey的Cache值
/// </summary>
/// <param name="CacheKey">
/// <param name="objObject">
public static void SetCache(string CacheKey, object objObject)
{
System.Web.Caching.Cache objCache = HttpRuntime.Cache;
objCache.Insert(CacheKey, objObject);
}
/// <summary>
/// 设置当前应用程序指定CacheKey的Cache值
/// </summary>
/// <param name="CacheKey">
/// <param name="objObject">
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>
/// 设置数据缓存
/// </summary>
public void Set(string CacheKey, object objObject, int timeout = 7200)
{
try
{
if (objObject == null) return;
var objCache = HttpRuntime.Cache;
//相对过期
//objCache.Insert(cacheKey, objObject, null, DateTime.MaxValue, timeout, CacheItemPriority.NotRemovable, null);
//绝对过期时间
objCache.Insert(CacheKey, objObject, null, DateTime.Now.AddSeconds(timeout), TimeSpan.Zero, CacheItemPriority.High, null);
}
catch (Exception)
{
//throw;
}
}
/// <summary>
/// 清除单一键缓存
/// </summary>
/// <param name="key">
public static void RemoveKeyCache(string CacheKey)
{
try
{
System.Web.Caching.Cache objCache = HttpRuntime.Cache;
objCache.Remove(CacheKey);
}
catch { }
}
/// <summary>
/// 清除所有缓存
/// </summary>
public static void RemoveAllCache()
{
System.Web.Caching.Cache _cache = HttpRuntime.Cache;
IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
if (_cache.Count > 0)
{
ArrayList al = new ArrayList();
while (CacheEnum.MoveNext())
{
al.Add(CacheEnum.Key);
}
foreach (string key in al)
{
_cache.Remove(key);
}
}
}
/// <summary>
/// 清除所有缓存
/// </summary>
public static void RemoveAllCache1()
{
var cache = HttpRuntime.Cache;
var cacheEnum = cache.GetEnumerator();
while (cacheEnum.MoveNext())
{
cache.Remove(cacheEnum.Key.ToString());
}
}
/// <summary>
/// 以列表形式返回已存在的所有缓存
/// </summary>
/// <returns></returns>
public static ArrayList ShowAllCache()
{
ArrayList al = new ArrayList();
System.Web.Caching.Cache _cache = HttpRuntime.Cache;
if (_cache.Count > 0)
{
IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
while (CacheEnum.MoveNext())
{
al.Add(CacheEnum.Key);
}
}
return al;
}
}
}