static public void ShowHighAchiversCommand()
{
StudentRegistry.GetInstance().visitStudents(new HighAchieverVisitor());
/*
* StudentRegistry a = StudentRegistry.GetInstance();
* int len = a.getStudentCount();
*
* for (int i = 0; i < len; i++)
* {
* Student st = a.getStudent(i);
* HighAchieverVisitor arq = new HighAchieverVisitor();
* arq.startVisit();
* arq.visitStudent(i + 1, st);
* //
* bool good = true;
* Student stu = a.getStudent(i);
* foreach (KeyValuePair<string, int> item in stu.marks)
* {
* if (item.Value < 5)
* {
* good = false;
* }
* }
* if (good)
* {
* stu.print_Short();
* }
* //
* }
*/
}
static public void RemoveStudentCommand()
{
StudentRegistry.GetInstance().visitStudents(new BriefPrintVisitor());
StudentRegistry a = StudentRegistry.GetInstance();
if (a.getStudentCount() > 0)
{
int n;
Console.WriteLine("Введите номер: ");
n = Convert.ToInt32(Console.ReadLine());
while (n <= 0 || n > a.getStudentCount())
{
Console.WriteLine("Введён неверный номер!");
Console.WriteLine("Введите номер: ");
n = Convert.ToInt32(Console.ReadLine());
}
Console.WriteLine("Вы уверены? y/n ");
string vp;
vp = Console.ReadLine();
if (vp == "y")
{
a.removeStudent(n - 1);
Console.WriteLine("Удалён успешно!");
}
}
}
public static StudentRegistry GetInstance()
{
if (instance == null)
{
instance = new StudentRegistry();
}
return(instance);
}
static public void ListStudentsCommand()
{
StudentRegistry.GetInstance().visitStudents(new DetaliedPrintVisitor());
/*
* StudentRegistry a = StudentRegistry.GetInstance();
* int len = a.getStudentCount();
* Student st = a.getStudent(0);
* //Console.WriteLine("===" + (i + 1) + "===");
* //st.print_Long();
* DetaliedPrintVisitor ar = new DetaliedPrintVisitor();
* ar.startVisit();
* ar.visitStudent(0 + 1, st);
*/
}
static public void AddStudentCommand()
{
StudentRegistry a = StudentRegistry.GetInstance();
string name, srname, ot, gr;
Console.WriteLine("Введите имя: ");
name = Console.ReadLine();
Console.WriteLine("Введите фамилию: ");
srname = Console.ReadLine();
Console.WriteLine("Введите отчество: ");
ot = Console.ReadLine();
Console.WriteLine("Введите группу: ");
gr = Console.ReadLine();
a.AddStudent(new Student(srname, name, ot, gr));
Console.WriteLine("Успешно добавлен!");
}
public static void SelectStudentCommand()
{
StudentRegistry.GetInstance().visitStudents(new BriefPrintVisitor());
Console.WriteLine("Введите порядковый номер студента (от 1 до " + StudentRegistry.GetInstance().getStudentCount() + " включительно): ");
int nv = Convert.ToInt32(Console.ReadLine());
if (StudentRegistry.GetInstance().getStudentCount() > 0)
{
while (nv < 1 && nv > StudentRegistry.GetInstance().getStudentCount())
{
Console.WriteLine("Введён неверный номер!");
Console.WriteLine("Введите порядковый номер студента (от 1 до " + StudentRegistry.GetInstance().getStudentCount() + " включительно): ");
nv = Convert.ToInt32(Console.ReadLine());
}
EditContext.GetInstance().student = StudentRegistry.GetInstance().getStudent(nv - 1);
}
else
{
throw new Exception("No students in base!");
}
}
