ASP. NET uses ext and newtonsoft. JSON for Ajax Asynchronization

1. Add corresponding attributes for the object class. Newtonsoft. JSON can easily serialize an object to a corresponding JSON string. If you need to customize the specified property serialization, you need to add the corresponding property such as ignore, then, the corresponding string generated after serialization does not include the field values that the user does not want to appear.

2. serialize the object class and return it. EXT sends an Ajax request to Handler through JS, and handler serializes the result into JSON and returns it.

3. Ext receives the JSON string result and uses decode to parse JSON to generate the corresponding object. The operation object displays the expected result.

4. Ext receives user input on the page, generates corresponding objects in JS, and assigns corresponding values according to user input, then encode generates a JSON string for the expected object (ext has good support for JSON), sends an Ajax request to the server, and the server receives the corresponding JSON string, deserialization generates corresponding entity classes to complete user operations.

TIPS: when you enter the page, you can write the JSON of the object class to the page. In JS, you can directly decode the object class.