public void DeleteLesson()
{
if (_lessons != null && _lessons.Count > 0 && IndexCurrentLesson >= 0 && IndexCurrentLesson < _lessons.Count)
{
var selectedLesson = Lessons[IndexCurrentLesson].Value.Name;
// Removes from lesson collection
Lessons.RemoveAt(IndexCurrentLesson);
var tmpLessons = new ObservableCollection <KeyValuePair <int, MinimalLesson> >();
foreach (var lesson in Lessons)
{
if (lesson.Key > IndexCurrentLesson)
{
tmpLessons.Add(new KeyValuePair <int, MinimalLesson>(lesson.Key - 1, lesson.Value));
}
else
{
tmpLessons.Add(lesson);
}
}
Lessons = tmpLessons;
RaisePropertyChanged("Lessons");
// Remove from HDD
var directory = Data.GetLessonFolder(selectedLesson);
if (Directory.Exists(directory))
{
try
{
Directory.Delete(directory, true);
}
catch (IOException e)
{
MessageBox.Show(e.Message);
}
}
RaisePropertyChanged("Lessons");
}
}