public StudentBO()
        {
            students = new List <StudentVO>();
            StudentVO student1 = new StudentVO("Benjamin", 1);
            StudentVO student2 = new StudentVO("Alice", 2);

            students.Add(student1);
            students.Add(student2);
        }
 public void UpdateStudent(StudentVO student)
 {
     students.Find(stud => stud.RollNo == student.RollNo).Name = student.Name;
     Console.WriteLine("Student No {0} updated in the database", student.RollNo);
 }
 public void DeleteStudent(StudentVO student)
 {
     students.Remove(student);
 }