If you have JSON that you want to deserialize, and you don't have the class to deserialize it into, you have options other than manually creating the class that you need:

Use JsonDocument and Utf8JsonReader directly.

Use Visual Studio 2019 to automatically generate the class you need:
Copy the JSON that you need to deserialize.
Create a class file and delete the template code.
Choose Edit > Paste Special > Paste JSON as Classes. The result is a class that you can use for your deserialization target.

要点：

• 复制json的内容
• 新建一个类文件
• 粘贴特别，粘贴为Json类或者XML类

非常神奇。