Asp.net(C#)-显示所有缓存 清除所有缓存

    //清除所有缓存
    protected void RemoveAllCache()
    {
       System.Web.Caching.Cache _cache = HttpRuntime.Cache;
       IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
       ArrayList al = new ArrayList();
       while (CacheEnum.MoveNext())
       {
          al.Add(CacheEnum.Key);
       }
       foreach (string key in al)
       {
          _cache.Remove(key);
       }
       show();
    }
    //显示所有缓存
    void show()
    {
       string str = "";
       IDictionaryEnumerator CacheEnum = HttpRuntime.Cache.GetEnumerator();
      
       while (CacheEnum.MoveNext())
       {
          str += "缓存名[" + CacheEnum.Key+"]
" ;
       }
       this.Label1.Text = "当前网站总缓存数:" + HttpRuntime.Cache.Count + "
"+str;
    }