所有这些与自定义序列化有什么关系呢？

What does all of this have to do with custom serialization?

youdao

自定义序列化就必须在按个别情况编写的。

Custom serializers would have to be written on a case by case basis.

youdao

还提供用于自定义序列化行为的扩展性功能。

System. Web. Script. Serialization namespace contains classes that provide JavaScript Object Notation (JSON) serialization and deserialization for managed types.

youdao