关于清空web缓存 没怎么用过 大家帮帮忙

Question

做了个在线考测系统
 把考生的试题放在了服务器端创建的cache中
 当考生点击提交试卷 或着考试结束时候到了后删除cache
  
 我用cache.remove删除 好像没什么效果
   请问大家该如何删除web缓存

Answer 1

private   Cache   cacheItem; HttpContext   context   =   HttpContext.Current; 
                        if   (   context   !=   null   ) 
                        { 
                                cacheItem   =   context.Cache; 
                        } 
                        else 
                        { 
                                cacheItem   =   HttpRuntime.Cache; 
                        } 
  
IDictionaryEnumerator   CacheEnum   =   cacheItem.GetEnumerator(   ); 
                        ArrayList   al   =   new   ArrayList(   ); 
                        while   (   CacheEnum.MoveNext(   )   ) 
                        { 
                                al.Add(   CacheEnum.Key   ); 
                        }                         foreach   (   string   key   in   al   ) 
                        { 
                                cacheItem.Remove(   key   ); 
                        }