public void AddTeacher(TeacherModel teacher)
{
string teacherID;
_dal.AddTeacher(teacher, out teacherID);
teacher.TeacherID = teacherID;
Teachers.Add(teacher);
TeacherChangedEvent?.Invoke(OperationType.Add, teacher);
}
public void ChangeClass(string className)
{
if (!string.IsNullOrEmpty(className))
{
//update current class ID
CurrentClassID = (ClassType)CurrentClassType == ClassType.Regular ?
_regular.RegularClassCollection.Where(c => c.ClassName == className).First().ClassID :
_block.BlockClassCollection.Where(c => c.ClassName == className).First().ClassID;
//update default teacher ID
CurrentTeacherID = (ClassType)CurrentClassType == ClassType.Regular ?
_regular.RegularClassCollection.Where(c => c.ClassName == className).First().TeacherID :
_block.BlockClassCollection.Where(c => c.ClassName == className).First().TeacherID;
//update teacher name in UI
TeacherChangedEvent?.Invoke(TeacherManagementBussiness.Instance.Teachers.Where(t => t.TeacherID == CurrentTeacherID).First().TeacherName);
//update trainees
if ((ClassType)CurrentClassType == ClassType.Regular)
{
_regularTrainees.GetTrainees(CurrentClassID);
}
else
{
if (_isUsedForPayment)
{
_blockTrainees.GetTraineesNotPay(CurrentClassID);
}
else
{
_blockTrainees.GetTrainees(CurrentClassID);
}
}
SelectedClassChangedEvent?.Invoke((ClassType)CurrentClassType == ClassType.Regular ?
(ClassModel)_regular.RegularClassCollection.Where(c => c.ClassName == className).First() :
(ClassModel)_block.BlockClassCollection.Where(c => c.ClassName == className).First());
}
}
public void UpdateTeacher(TeacherModel teacher)
{
_dal.UpdateTeacher(teacher);
TeacherChangedEvent?.Invoke(OperationType.Update, teacher, Teachers.Where(t => t.TeacherID == teacher.TeacherID).First());
Teachers[Teachers.IndexOf(Teachers.Where(t => t.TeacherID == teacher.TeacherID).First())] = teacher;
}