What is the difference between DbContext.Add () and DbContext.DbSet <TEntity> .Add (TEntity)? When do you use one against the other?

Question

In the ms docs of the Razor page , in DbContext there are DbSet students installed

public class SchoolContext : DbContext
{
    public DbSet<Student> Students { get; set; }

and in the OnPostAsync () method creates and then adds updated students using the method DbSet<TEntity>.Add(TEntity) (documentation) :

        var emptyStudent = new Student();
        if (await TryUpdateModelAsync<Student>(
            emptyStudent,
            "student",   // Prefix for form value.
            s => s.FirstMidName, s => s.LastName, s => s.EnrollmentDate))
        {
            _context.Students.Add(emptyStudent);
            await _context.SaveChangesAsync();

---

the MVC tutorial also hasDbContextone that has DbSet students, but in the StudentsController.cs Create () post, it adds to students directly calling DbContext.add () in DbContext:

_context.Add(student); 
await _context.SaveChangesAsync();

The only difference I see is that in MVC the student was passed as a parameter:

public async Task<IActionResult> Create([Bind("LastName,FirstMidName,EnrollmentDate")] Student student)

    {

---

Is there a difference between the two? Can they be used interchangeably. When to use this or that?

Answer 1

InternalDbSet ( DbSet) Add:

public override EntityEntry<TEntity> Add(TEntity entity)
        => _context.Add(entity);

, DbContext Add.

, .