async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
Notes.Clear();
var notes = await NotesDataStore.GetNotesAsync();
foreach (var note in notes)
{
Notes.Add(note);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
public ItemsViewModel()
{
Title = "Browse";
Notes = new ObservableCollection <Note>();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
MessagingCenter.Subscribe <ItemDetailPage, Note>(this, "SaveNote", async(sender, note) =>
{
Notes.Add(note);
await NotesDataStore.AddItemAsync(note);
});
MessagingCenter.Subscribe <ItemDetailPage, Note>(this, "EditNote", async(sender, note) =>
{
await NotesDataStore.UpdateItemAsync(note);
});
}
public async void InitializeCourseList()
{
courseList = await NotesDataStore.GetCourseAsync();
}
