c#深度复制

/// <summary>
        /// 深度复制
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        private static T DeepCopyByBin<T>(T obj)
        {
            object retval;
            using (MemoryStream ms = new MemoryStream())
            {
                BinaryFormatter bf = new BinaryFormatter();
                //序列化成流
                bf.Serialize(ms, obj);
                ms.Seek(0, SeekOrigin.Begin);
                //反序列化成对象
                retval = bf.Deserialize(ms);
                ms.Close();
            }
            return (T)retval;
        }