public static bool AddSubject(string given_subject_name, string given_teacher, SubjectColor given_color, int given_id = 0)
{
bool erfolgreich;
if (given_color == null)
{
given_color = SubjectColorManager.GetList().Find(x => x.color == Colors.Black);
}
if (given_subject_name != "" && given_color != null)
{
Subject new_subject = new Subject()
{
subject_name = given_subject_name, teacher = given_teacher, color = given_color
};
if (given_id == 0)
{
new_subject.id = SubjectManager.FreeId();
}
else
{
new_subject.id = given_id;
}
MyData.my_subjects_list.Add(new_subject);
erfolgreich = true;
}
else
{
not_completed_dialog(); erfolgreich = false;
}
return(erfolgreich);
}
public static bool EditSubject(int given_id, string new_subject_name, string new_teacher, SubjectColor new_color)
{
bool erfolgreich = true;
if (!String.IsNullOrWhiteSpace(new_subject_name))
{
MyData.my_subjects_list.Find(x => x.id == given_id).subject_name = new_subject_name;
MyData.my_subjects_list.Find(x => x.id == given_id).teacher = new_teacher;
}
else
{
not_completed_dialog(); erfolgreich = false;
}
if (new_color != null)
{
MyData.my_subjects_list.Find(x => x.id == given_id).color = new_color;
}
return(erfolgreich);
}
