Save functionality does not work

Question

Hi Team

 

I want to make my save functionality to work, but it does not keep any record to my table and need some help. In summary what i want here is when a user creates a course, the coursename must stored to the table as raw data, so can see it to the course dashboard. Mine does not keep any record, here my logic below;

 [Route("Home/CoursesRegistration")]
      public ActionResult CoursesRegistration( eNtsaRegCourses collection)
        {
            if(ModelState.IsValid)
            {

                cb.SaveChanges();
                return RedirectToAction("Courses", "Home");
            }

            return View(collection);
        }
 //GET://Courses/Courses-All.
        [Route("Home/Courses")]
      public ActionResult Courses(string g) // This method must keep those record, when user register the course-name.
        {
            return View(g);
        }

// Model
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data.Entity;
using eNtsaRegistrationTraining.Models;

namespace eNtsaRegistrationTraining.DAL
{
    public class eNtsaRegCourses:DbContext
    {

        public eNtsaRegCourses(): base("eNtsaRegCourses")
        {

        }
        public DbSet<eNtsaCourses> eNtsaCourse { get; set; }
        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            Database.SetInitializer<eNtsaRegistration>(null);
            base.OnModelCreating(modelBuilder);
        }
    }
}

// Model
// db-schema lists.
public class eNtsaCourses
{
    [Key]
    public Guid? Id { get; set; }
    public string Course { get; set; }
        public string Nickname { get; set; }
        public string Term { get; set; }
        public string EnrolledAs { get; set; }
        public bool Published { get; set; }
}

// View
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>
<a class="btn btn-large btn-success" id="fire" href="@Url.Action("CoursesRegistration", "Home")">Create Courses</a>
<script type="text/javascript" src="~/Scripts/jquery-3.4.1.js"></script>
<script type="text/javascript">
$('#fire').on('click', function (e) {
var url = '@Url.Action("CoursesRegistration", "eNtsaCourses")';
$(jQuery.noConflict);
$('#ModalContent').load(url, function (html) {
var form = $("#Modal-eNtsaCourses form");
$.validator.unobtrusive.parse(form);
$("#Modal-eNtsaCourses").modal('show');
form.submit(function () {
$.ajax({
url: this.action,
type: this.method,
data: $(this).serialize(),
success: function (result) {
$('#Modal-eNtsaCourses').modal('hide');
var content = '@Url.Action("Courses", "eNtsaCourses")';
$('#ViewCourses').load(content);
}
});
return false;
});
});
});
</script>
</div>