public static int Count(this IAllDepartments allDepartments)
{
return(allDepartments.DisplayAllDepartment().Count);
}
private void StartApp(int choice)
{
CollegeService collegeService = new CollegeService(allDepartments, allStudent, studentAndDepartment, crudStudent, crudDepartment);
Console.WriteLine("Count of all student");
Console.WriteLine(collegeService.CountStudents());
Console.WriteLine("Count of all departments");
Console.WriteLine(collegeService.CountDepartments());
switch (choice)
{
case 1:
foreach (Student student in collegeService.DisplayAllStudent())
{
Console.WriteLine(student);
}
break;
case 2:
Console.WriteLine("Enter Id to be fetched");
int id;
if (int.TryParse(Console.ReadLine(), out id))
{
Console.WriteLine(allStudent.GetStudentById(id));
}
else
{
Console.WriteLine("Enter Proper Id");
}
break;
case 3:
foreach (Department department in allDepartments.DisplayAllDepartment())
{
Console.WriteLine(department);
}
break;
case 4:
Console.WriteLine("Enter Department Id to be fetched");
int Dept_id;
if (int.TryParse(Console.ReadLine(), out Dept_id))
{
foreach (JoinedStudentDepartments student in studentAndDepartment.GetStudentsByDepartment(Dept_id))
{
Console.WriteLine(student);
}
}
else
{
Console.WriteLine("Enter Proper Id");
}
break;
case 5:
foreach (var obj in collegeService.GetStudentsByDepartment())
{
Console.WriteLine("Students of {0} Department", obj.Key);
foreach (Student student in obj)
{
Console.WriteLine(" " + student);
}
}
break;
case 6:
Console.WriteLine("Enter Department Id to be fetched");
if (int.TryParse(Console.ReadLine(), out id))
{
Console.WriteLine(collegeService.DisplayDepartmentById(id));
}
else
{
Console.WriteLine("Enter Proper Id");
}
break;
case 7:
crudStudentOperations(collegeService);
break;
case 8:
crudDepartmentOperations(collegeService);
break;
}
}