How to implement many to many relationship in Asp.Net Mvc ..

Question

In Index() method of School controller, Which code need to write by me? Please, explain. I don't want to use fluent API. I want to implement it using Data Annotation.

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 In Model Folder, I have created Student.cs class

public class Student
    {
        public int StudentId { get; set; }
        public string StudentName { get; set; }
        public ICollection<Course> CoursesNProperty { get; set; }
    }

In Model Folder, I have created Course.cs class

public class Course
    {
        public int CourseId { get; set; }
        public string CourseName { get; set; }
        public ICollection<Student> StudentsNProperty { get; set; }
    }

In Model Folder, I have created SchoolContext.cs class

public class SchoolContext :DbContext
    {
        public SchoolContext() : base("name=conStr") { }
        public DbSet<Student> Students { get; set; }
        public DbSet<Course> Courses { get; set; }
    }

In web.config file

<connectionStrings>
    <add name="conStr" connectionString="Data Source=Dinesh\Aaradhya;Database=GopinathSchoolMToM;User Id=sa;Password=test123" providerName="System.Data.SqlClient"/>
  </connectionStrings>

In controller Folder, I have created School controller

using Note7Page124CascadeMToM.Models;
namespace Note7Page124CascadeMToM.Controllers
{
    public class SchoolController : Controller
    {
        SchoolContext db = new SchoolContext();
        // GET: School
        public ActionResult Index()
        {
            Student student1 = new Student()
            {
                StudentName = "Prakash"
            };
            Student student2 = new Student()
            {
                StudentName = "Shubham"
            };
            Course course1 = new Course()
            {
                CourseName = "Asp.Net"
            };
            Course course2 = new Course()
            {
                CourseName="C#.Net"
            };
            //Which code need to implement here? ...
            return View();
        }
    }
}