static void DeleteStudent(ref Laboratory laboratory) { List <Student> students = laboratory.GetStudents(); int deleteIndex = ChoiceStudent(ref students); students.RemoveAt(--deleteIndex); }
static void AddGrade(ref Laboratory laboratory) { List <Student> students = laboratory.GetStudents(); int choiceIndex = ChoiceStudent(ref students); Student student = students.ElementAt(--choiceIndex); Console.Clear(); Console.Write("Введите новую оценку для ID:{0}: ", student.Id); student.AddGrade(Int32.Parse(Console.ReadLine())); }