public void AddDefaults(int number)
{
for (int i = 0; i < number; i++)
{
string firstName = $"Name{students.Count}";
string lastName = $"LastName{students.Count}";
int group = students.Count + 5;
Student student = new Student(new Person(firstName, lastName, new DateTime()), Education.Đ’achelor, group);
student.AddExams(new Exam(firstName, students.Count + 3, new DateTime()));
student.PropertyChanged += StudentChanged;
students.Add(keySelector(student), student);
StudentsChanged?.Invoke(this, new StudentsChangedEventArgs <TKey>(Name, Action.Add,
"Add default students", keySelector(student)));
}
}
public bool Remove(Student st)
{
try
{
foreach (var item in students)
{
if (item.Value.Equals(st))
{
students[item.Key].PropertyChanged -= StudentChanged;
StudentsChanged?.Invoke(this, new StudentsChangedEventArgs <TKey>(Name, Action.Remove,
"Remove student", keySelector(students[item.Key])));
students.Remove(item.Key);
}
}
}
catch
{
return(false);
}
return(true);
}
public void PropertyChanged(object obj, PropertyChangedEventArgs e)
{
StudentsChanged?.Invoke(obj, new StudentChangedEventArgs <TKey>(collectionName, Action.Property, e.PropertyName, GetKey(obj as Student)));
}
internal void RemoveStudent(Student student)
{
studentManager.RemoveStudent(student);
StudentsChanged?.Invoke(this, null);
GetBirthdayStudent();
}
internal void NoSaveStudent()
{
studentManager.LoadStudentList();
StudentsChanged?.Invoke(this, null);
}
internal void SaveStudent()
{
studentManager.SaveStudentList();
StudentsChanged?.Invoke(this, null);
GetBirthdayStudent();
}
public void StudentChanged(object sender, PropertyChangedEventArgs handlerEvent)
{
StudentsChanged?.Invoke(this, new StudentsChangedEventArgs <TKey>(Name, Action.Property,
handlerEvent.PropertyName, keySelector((Student)sender)));
}
internal void CreateStudent(Group selectedGroup)
{
groupManager.CreateStudent(selectedGroup);
StudentsChanged?.Invoke(this, null);
}
internal void RemoveStudent(Group selectedGroup, Student selectedStudent)
{
groupManager.Remove(selectedGroup, selectedStudent);
StudentsChanged?.Invoke(this, null);
}
internal void EditStudent(Group selectedGroup, Student selectedStudent)
{
groupManager.Edit(selectedGroup, selectedStudent);
StudentsChanged?.Invoke(this, null);
}
