/// 
        /// 判断是否有交集        /// 
        /// 
             ///         ///         /// 
             public static bool IsArrayIntersection
     
      (List
      
        list1, List
       
         list2)        {            List
        
          t = list1.Distinct().ToList();            var exceptArr = t.Except(list2).ToList();            if (exceptArr.Count < t.Count)            {                return true;            }            else            {                return false;            }        }