private async Task Save()
{
this.Lesson.Date = this.LessonDate;
this.Lesson.Description = this.Description;
this.Lesson.Group = this.IsGroupsAvailable ? this.SelectedGroup : null;
this.Lesson.Stream = this.SelectedStream;
this.Lesson.LessonType = this.SelectedLessonType.Type;
this.Lesson.Schedule = this.SelectedSchedule;
if (!this.IsGroupsAvailable)
{
this.Lesson.Group = null;
}
_originalEntity.Apply(this.Lesson);
_db.SetLessonOrder(_originalEntity);
if (this.Lesson.Id == default)
{
_originalEntity.CreationDate = DateTime.Now;
_db.Lessons.Add(_originalEntity);
}
await _db.SaveChangesAsync();
if (!this.SetAllPresent)
{
return;
}
await RegisterAllStudents(_originalEntity);
}