public OperationResult GetCache(string KeyId)
 {
     if (KeyId != null || KeyId != "")
     {
         item = Mycache.GetCacheItem(KeyId);
         if (item.Equals(null))
         {
             return new OperationResult(OperationResultType.Success, string.Format("成功取得{0}缓存值", KeyId), item.Value);
         }
         return new OperationResult(OperationResultType.QueryNull, string.Format("键{0}的缓存为空", KeyId));
     }
     return new OperationResult(OperationResultType.ParamError, "KeyId is null");
 }
 public OperationResult SetCache(string KeyId, object obj, TimeSpan timespan)
 {
     if (KeyId != null || KeyId != "")
     {
         item = Mycache.GetCacheItem(KeyId);
         if (item.Equals(null))
         {
             item = new CacheItem(KeyId, obj);
             policy.AbsoluteExpiration.Add(timespan);
             Mycache.Set(item, policy);
             return new OperationResult(OperationResultType.Success, string.Format("成功插入{0}缓存", KeyId));
         }
         return new OperationResult(OperationResultType.NoChanged, string.Format("已存在{0}键的缓存", KeyId));
     }
     return new OperationResult(OperationResultType.ParamError, "KeyId is null");
 }