这个自定义的C#类封装了部分常用的缓存操作，包括写入缓存，读取缓存，设置缓存过期时间等等，简化了C#的缓存操作，代码非常简单，易于阅读。

using System;
using System.Web;
 
namespace DotNet.Utilities
{
    /// <summary>
    /// 缓存相关的操作类
    /// </summary>
    public class DataCache
    {
        /// <summary>
        /// 获取当前应用程序指定CacheKey的Cache值
        /// </summary>
        /// <param name="CacheKey"></param>
        /// <returns></returns>
        public static object GetCache(string CacheKey)
        {
            System.Web.Caching.Cache objCache = HttpRuntime.Cache;
            return objCache[CacheKey];
        }
 
        /// <summary>
        /// 设置当前应用程序指定CacheKey的Cache值
        /// </summary>
        /// <param name="CacheKey"></param>
        /// <param name="objObject"></param>
        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>
        /// <param name="objObject"></param>
        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);
        }
    }
}