• Cache缓存帮助类


    using System;
    using System.Web;
    using System.Collections;
    
    namespace MSCL
    {
        /// <summary>
        /// Cache辅助类
        /// </summary>
        public class CacheHelper
        {
            /// <summary>
            /// 获取数据缓存
            /// </summary>
            /// <param name="CacheKey">键</param>
            public static object GetCache(string CacheKey)
            {
                System.Web.Caching.Cache objCache = HttpRuntime.Cache;
                return objCache[CacheKey];
            }
    
            /// <summary>
            /// 设置数据缓存
            /// </summary>
            public static void SetCache(string CacheKey, object objObject)
            {
                System.Web.Caching.Cache objCache = HttpRuntime.Cache;
                objCache.Insert(CacheKey, objObject);
            }
    
            /// <summary>
            /// 设置数据缓存
            /// </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>
            /// 设置数据缓存
            /// </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>
            /// 移除指定数据缓存
            /// </summary>
            public static void RemoveAllCache(string CacheKey)
            {
                System.Web.Caching.Cache _cache = HttpRuntime.Cache;
                _cache.Remove(CacheKey);
            }
    
            /// <summary>
            /// 移除全部缓存
            /// </summary>
            public static void RemoveAllCache()
            {
                System.Web.Caching.Cache _cache = HttpRuntime.Cache;
                IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
                while (CacheEnum.MoveNext())
                {
                    _cache.Remove(CacheEnum.Key.ToString());
                }
            }
        }
    }
    var cache = MSCL.CacheHelper.GetCache("mydata");
    List<TestTable> list = new List<TestTable>();
    if (cache == null)
    {
    	int recordCount = 0;
    	int totalPage = 0;
    	list = RBAC.Dal.DataRootBase.QueryPagingMssql<TestTable>("TestTable", "*", "D_Id asc", 2, 10, "", out recordCount, out totalPage);
    	//插入cache 缓存30秒
    	MSCL.CacheHelper.SetCache("mydata", list, DateTime.Now.AddSeconds(30), TimeSpan.Zero);
    }
    else
    {
    	list = (List<TestTable>)cache;
    }
    
    
    foreach (var item in list)
    {
    	str += string.Format("用户名{0}密码{1}真实姓名{2}--{3}<br>", item.D_Id, item.D_Password, item.D_Name, DateTime.Now);
    }



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  • 原文地址:https://www.cnblogs.com/smartsmile/p/6234031.html
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