private void AddGroup() { int course = 0; int count = 0; string groupName = ""; List <PersoneDTO> persones = new List <PersoneDTO>(); Console.WriteLine("\n-|Create Group|-\n"); course = NumberCheck("Course :", 7, 1); count = NumberCheck("Student count(<=60) :", 61, 13); Console.Write("Group name : "); groupName = Console.ReadLine(); Console.WriteLine("\n+|Student|+"); persones.Add(AddPerson()); Console.WriteLine("Clone : No(0)"); choise = Console.ReadLine(); if (choise == "0") { for (int i = 1; i < count; i++) { persones.Add(AddPerson()); } } else { for (int i = 1; i < count; i++) { persones.Add(Clone(persones[0], i)); } } service.AddGroup(persones, course, groupName); }