How to pass json file to controller via AJAX correctly?

Question

JavaScript

Hello! There was a need to transfer a json file from the client to the server using an AJAX Post request. Everything is initialized, but I get error #500. Thank you all in advance!

//javascript клинт
     var visualControl = {
            WaferName: NumberOfBar,//string
            surname: Surname,//string
            dateTime: Date(),//Date
            listOfDefects : masOfDefects,//Array

        }



        $.ajax({

            type: 'POST',
            url: 'http://localhost:53114/AddDefect/ReturnDefect',
            data: JSON.stringify(visualControl),
            success: function(){
                alert("Данные отправлены, Спасибо, " + SurnameCoded + "!");
            },
            dataType: 'json'

        });

    }

//контроллер
   [HttpPost]
        public void  ReturnDefect (dynamic json)
        {
            

            StreamWriter sw = new StreamWriter("C:\\kek/kek.txt");
            sw.WriteLine(json.WaferName);
            sw.WriteLine(json.surname);
            sw.WriteLine(json.dateTime);
            sw.WriteLine(json.listOfDefects);
           


            //sw.Close();

       

        }

Answer 1

1) Mark the input parameters with the [FromBody] attribute. What you wrote is theoretically a dynamic parameter, which should consist of 80-90 fields, which are actually contained in the request.
2) Write a model class into which the query mapping should actually be done.
PS your request is clearly directed to localhost:53114. If your application is in the same domain as the client part, remove this link, and if not, then make sure that CORS is correctly configured in your application.