使用APPLICATION制作缓存,转存一下,有一段写的还可以。

 public sealed class CacheManager
   {
     private HttpApplicationState appPool = null;
     /// <summary>
     /// 构造函数
     /// </summary>
     public CacheManager()
     {
       this.appPool = HttpContext.Current.Application;
     }
     /// <summary>
     /// 构造函数
     /// </summary>
     /// <param name="application">HttpApplicationState 对象</param>
     public CacheManager(HttpApplicationState application)
     {
       this.appPool = application;
     }
     /// <summary>
     /// 删除缓存
     /// </summary>
     /// <param name="key">缓存名称</param>
     public void Delete(string key)
     {
       this.appPool.Lock();
       this.appPool.Remove(key);
       this.appPool.Remove(key + "(expTime)");
       this.appPool.UnLock();
     }
     /// <summary>
     /// 添加缓存
     /// </summary>
     /// <param name="key">缓存名称</param>
     /// <param name="value">缓存值</param>
     /// <returns></returns>
     public bool Add(string key, object value)
     {
       try
       {
         this.appPool.Lock();
         this.appPool[key] = value;
         this.appPool[key + "(expTime)"] = DateTime.MaxValue; // 这里设置一个最大时间值,直到Application结束。
         this.appPool.UnLock();
       }
       catch
       {
         return false;
       }
       return true;
     }
     /// <summary>
     /// 添加缓存
     /// </summary>
     /// <param name="key">缓存名称</param>
     /// <param name="value">缓存值</param>
     /// <param name="expireTime">有效时间</param>
     /// <returns></returns>
     public bool Add(string key, object value, DateTime expireTime)
     {
       try
       {
         this.appPool.Lock();
         this.appPool[key] = value;
         this.appPool[key + "(expTime)"] = expireTime;
         this.appPool.UnLock();
       }
       catch
       {
         return false;
       }
       return true;
     }
     /// <summary>
     /// 获取缓存
     /// </summary>
     /// <param name="key">缓存名称</param>
     /// <returns></returns>
     public object Get(string key)
     {
       object o = this.appPool.Get(key + "(expTime)");
       if (o != null)
       {
         TimeSpan ts = (TimeSpan)(DateTime.Now - (DateTime)o);
         if (ts.TotalSeconds < 0)
         {
           return this.appPool.Get(key);
         }
         else
         {
           this.Delete(key);
           return null;
         }

使用APPLICATION制作缓存,转存一下,有一段写的还可以。

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