Untitled

var studentsMethod = context.Enrollments
    .Where(e => e.Course.Title == courseName)
    .Select(e => new
    {
        Name = e.Student.FirstName + " " + e.Student.LastName,
        e.Student.Email,
        Grades = e.Grade != null ? e.Grade.ToString() : "N/A"
    }).ToList();

foreach (var student in studentsMethod)
{
    Console.WriteLine($"{student.Name}, " +
        $"{student.Email}, " +
        $"{student.Grades}");
}