private void DropStudent()
{
var theStudent = SelectedEnrolledStudent;
SelectedSection.StudentIds.Remove(theStudent.Id);
mDataService.Save();
NonEnrolledStudents.Add(theStudent);
EnrolledStudents.Remove(theStudent);
SelectedNonEnrolledStudent = theStudent;
}
//**************************************
//
public bool Drop(Student s) {
// We may only drop a student if he/she is enrolled.
if (!s.IsEnrolledIn(this)) {
return false;
}
else {
// Find the student in our Dictionary, and remove it.
EnrolledStudents.Remove(s.Id);
// Note bidirectionality.
s.DropSection(this);
return true;
}
}