.NET二进制格式反序列化一个对象，其定义已经发生了很大变化 [英] .net binary formatter deserialize an object whose definition has changed a lot

问题描述

我想反序列化是使用的是旧版本的序列化的文件。

I am trying to deserialize a file which is serialized using an older version.

在新版本中，我们做了以下事情

In the new version, We have done the following things

1. 更改命名空间
2. 更改类成员访问级别，从私人到公共
3. 添加一个新的跨父类。 A类来源于基地。现在，一类是从乙衍生，和B从基地而得。在B，没有新的部件引入。
4. 在基类增加了新的成员。

我知道用SerializationBinder就可以解决的问题1.对于新增加的类成员，我已经标有[非序列化。但我仍然得到反序列化的错误。

I know using SerializationBinder can solve issue 1. For the new added class member, I have marked with [NonSerialized]. But I still get deserialization error.

任何指针？

推荐答案

我讨厌这样说，但我在这里的第一个指针是不这样做 - 的BinaryFormatter 很脆 - 而你的可以的经常砰键盘上你的头6个小时才能过去每个连续的痛点，这真的是不值得的。有很多很多的原因，我总是说不使用的BinaryFormatter - 你已经伤心地发现其中4个。坦率地说，我的建议是：

I hate to say it, but my first pointer here would be "don't do that" - BinaryFormatter is very brittle - and while you can often bang your head on the keyboard for 6 hours to get past each successive pain point, it really isn't worth it. There are many many reasons I always say "don't use BinaryFormatter" - you've sadly found 4 of them. Frankly, my recommendation would be:

• 放回到原来的班级，并使用它只是作为一个DTO反序列化的旧数据
• 在开始移动到一个模型，你有一个单独的DTO模型和实体模型 - 以及它们之间的映射，使您的序列是完全独立应用程序的逻辑
• 在探讨不同序列化器;几乎所有的替代串是preferable到的BinaryFormatter （也许除了 NetDataContractSerializer ，肚里并重复所有同样的错误; 的DataContractSerializer 是好的杂交，虽然）

• put back the original class, and use it just as a DTO to deserialize the old data
• start moving to a model where you have a separate DTO model and entity model - and map between them so that your serialization is entirely independent of your application logic
• investigate different serializers; just about any alternative serializer would be preferable to BinaryFormatter (except perhaps NetDataContractSerializer, which goes and repeats all the same mistakes; DataContractSerializer is ok-ish, though)

对不起，是不是更积极的......

Sorry that isn't more positive...

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