private void LoadDocumentNumberComboBox()
{
ITeacherLogic teacherOpertions = Provider.GetInstance.GetTeacherOperations();
List <Teacher> systemTeachers = teacherOpertions.GetTeachers();
foreach (Teacher teacher in systemTeachers)
{
this.comboBoxTeachersDocuments.Items.Add(teacher.GetDocumentNumber());
}
}
private void LoadTeacherListBox()
{
ITeacherLogic teacherOperations = Provider.GetInstance.GetTeacherOperations();
List <Teacher> systemTeachers = teacherOperations.GetTeachers();
foreach (Teacher teacher in systemTeachers)
{
this.listBoxSystemTeachers.Items.Add(teacher);
}
}
private void FillTeachersCombo()
{
ITeacherLogic teacherOperations = Provider.GetInstance.GetTeacherOperations();
var systemTeachers = teacherOperations.GetTeachers();
foreach (Teacher teacher in systemTeachers)
{
this.comboBoxTeachersDocuments.Items.Add(teacher.Document);
}
}
private void FillSystemTeachersListBox(int subjectCode)
{
ITeacherLogic teacherOperations = Provider.GetInstance.GetTeacherOperations();
ISubjectLogic subjectOperations = Provider.GetInstance.GetSubjectOperations();
List <Teacher> systemTeachers = teacherOperations.GetTeachers();
var subject = subjectOperations.GetSubjectByCode(subjectCode);
var teachersOfThisSubject = subject.Teachers;
var teachersToAddToListBox = systemTeachers.Where(t => !teachersOfThisSubject.Any(st => st.Document == t.Document)).ToList();
for (int index = 0; index < teachersToAddToListBox.Count(); index++)
{
this.listBoxSystemTeachers.Items.Add(teachersToAddToListBox[index]);
}
}
private bool IsThisSubjectAssignedToAnyTeacher(Subject subjectToDelete)
{
bool isSubjectAssignedToATeacher = false;
var selectedSubject = this.comboBoxSelectSubjectToDelete.SelectedItem as Subject;
ITeacherLogic teacherOperations = Provider.GetInstance.GetTeacherOperations();
var teachers = teacherOperations.GetTeachers(true);
for (int index = 0; index < teachers?.Count(); index++)
{
var teacherSubjects = teachers[index].GetSubjects();
if (teacherSubjects.Any(s => s.Code.Equals(subjectToDelete.Code)))
{
isSubjectAssignedToATeacher = true;
}
}
return(isSubjectAssignedToATeacher);
}
