数据库里面存储对象

    /// <summary>
    /// BinaryHelper 的摘要说明
    /// </summary>
    public static class BinaryHelper
    {
        /// <summary>
        /// 将对象序列化为Byte[]数组类型,数据库里面对应的字段为:varbinary类型
        /// </summary>
        /// <param name="obj">obj</param>
        /// <returns></returns>
        public static byte[] ToByteArr(Object obj)
        {
            MemoryStream ms = new MemoryStream();
            BinaryFormatter bf = new BinaryFormatter();
            bf.Serialize(ms, obj);
            byte[] byteArr = ms.ToArray();
            return byteArr;
        }
        /// <summary>
        /// 将Byte[]数组反序列化为一个对象
        /// </summary>
        /// <typeparam name="T">T</typeparam>
        /// <param name="bytes">bytes</param>
        /// <returns></returns>
        public static T ToObj<T>(byte[] bytes)
        {
            MemoryStream ms = new MemoryStream(bytes);
            BinaryFormatter bf = new BinaryFormatter();
            Object obj = bf.Deserialize(ms);
            return (T)obj;
        }
    }

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