/// <summary>
 /// 构造函数
 /// </summary>
 /// <param name="type">进行比较的类类型</param>
 /// <param name="name">进行比较对象的属性名称</param>
 /// <param name="direction">比较方向(升序/降序)</param>
 public SortUtil(Type type, string name, SortInfo.Direction direction)
 {
     this.type      = type;
     this.info.name = name;
     if (direction != SortInfo.Direction.ASC)
     {
         this.info.direction = direction;
     }
 }
 /// <summary>
 /// 构造函数
 /// </summary>
 /// <param name="className">进行比较的类名称</param>
 /// <param name="name">进行比较对象的属性名称</param>
 /// <param name="direction">比较方向(升序/降序)</param>
 public SortUtil(string className, string name, SortInfo.Direction direction)
 {
     try
     {
         this.type           = Type.GetType(className, true);
         this.info.name      = name;
         this.info.direction = direction;
     }
     catch (Exception e)
     {
         throw new Exception(e.Message);
     }
 }
 /// <summary>
 /// 构造函数
 /// </summary>
 /// <param name="t">进行比较的类型的实例</param>
 /// <param name="name">进行比较对象的属性名称</param>
 /// <param name="direction">比较方向(升序/降序)</param>
 public SortUtil(T t, string name, SortInfo.Direction direction)
 {
     this.type           = t.GetType();
     this.info.name      = name;
     this.info.direction = direction;
 }