public StudentBusinessObject()
        {
            _students = new List <StudentTransferObject>();
            var student1 = new StudentTransferObject("Robert", 0);
            var student2 = new StudentTransferObject("John", 1);

            _students.Add(student1);
            _students.Add(student2);
        }
 public void UpdateStudent(StudentTransferObject student)
 {
     _students[student.Id].Name = student.Name;
     Trace.WriteLine("Student: Roll No " + student.Id + ", updated in the database" + Environment.NewLine);
 }
 public void DeleteStudent(StudentTransferObject student)
 {
     _students.Remove(student);
     Trace.WriteLine("Student: Roll No " + student.Id + ", deleted from database" + Environment.NewLine);
 }