static public void RegisterForCourse(HashSet <Course> course, Student student, semisterNames semister, SemisterYear year)
{
var program = Programs.Where(p => p.RegisredStudentsList.Contains(student)).FirstOrDefault();
if (program != null) // if student is enrolled in aprogram
{
var courseavaliable = DisplayCoursesForYearPerSemister(semister, year, program.ProgramName);
//TO DO: check registrar policy for the maximum number of course registred at atime for a simister.
if (!course.All(i => student.RegistredCourses.Contains(i)) && course.All(i => courseavaliable.Contains(i)))
{
student.RegistredCourses.Concat(course);
}
else
{
Console.WriteLine("you already registed for this course or not avaliable");
}
}
else
{
Console.WriteLine("please enroll in aprogramm");
}
}
static public IEnumerable <Course> DisplayCoursesForYearPerSemister(semisterNames semister, SemisterYear year, programsNames program)
{
return(Programs.Where(p => p.ProgramName == program).FirstOrDefault().Courses.Where(c => c.semisterName == semister && c.Semisterbatch == year));
}