Controller: SetValueAttributeExampleController.cs

using SnapObjects.Data;
using Appeon.ApiDoc.Models.School;
using Microsoft.AspNetCore.Mvc;
using System.Linq;

namespace Appeon.ApiDoc.Attribute
{
    [Route("examples/IDetailTrack/TrackDetail/[action]")]
    public class SetValueAttributeExampleController : Controller
    {
        private readonly SchoolContext _dataContext;

        public SetValueAttributeExampleController(SchoolContext dataContext)
        {
            _dataContext = dataContext;
        }

        [HttpPost]
        public string Example1(IDataUnpacker dataUnpacker)
        {
            // Uses IDataUnpack to receive JSON data from the client app.


            // Gets the data of Course and OnlineCourse from the client app.
            var course = dataUnpacker.GetModelEntries<CourseSetValueExample1>("course")
                                     .FirstOrDefault();
            var onlineCourses = dataUnpacker
                                .GetModelEntries<OnlineCourse>("onlinecourse")
                                .FirstOrDefault();

            // Saves data.
            var example = new SetValueAttributeExamples.SetValueAttributeExample(_dataContext);
            example.Example1(course, onlineCourses);

            return "SUCCESS";
        }

        [HttpPost]
        public string Example2(IDataUnpacker dataUnpacker)
        {
            // Use IDataUnpack to receive Json data from Client.


            // Gets Course and OnlineCourse.
            var course = dataUnpacker
                         .GetModelEntries<CourseSetValueExample2>("course")
                         .FirstOrDefault();
            var onlineCourses = dataUnpacker
                                .GetModelEntries<OnlineCourse>("onlinecourse")
                                .FirstOrDefault();

            // Saves data.
            var example = new SetValueAttributeExamples.SetValueAttributeExample(_dataContext);
            example.Example2(course, onlineCourses);

            return "SUCCESS";
        }

        [HttpPost]
        public string Example3(IDataUnpacker dataUnpacker)
        {
            // Use IDataUnpack to receive Json data from Client.


            // Gets Course and OnlineCourse.
            var course = dataUnpacker
                         .GetModelEntries<CourseSetValueExample3>("course")
                         .FirstOrDefault();
            var onlineCourses = dataUnpacker
                                .GetModelEntries<OnlineCourse>("onlinecourse")
                                .FirstOrDefault();

            // Saves data.
            var example = new SetValueAttributeExamples.SetValueAttributeExample(_dataContext);
            example.Example3(course, onlineCourses);

            return "SUCCESS";
        }
    }
}

Refer To

JSON Files: SetValueAttributeExample SetValueAttributeExample SetValueAttributeExample3