async Task ExecuteRefreshCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
var _items = await table.GetItemsAsync();
Items.Clear();
foreach (var item in _items)
{
Items.Add(item);
}
IsBusy = false;
}
catch (Exception ex)
{
await Application.Current.MainPage.DisplayAlert("Error", ex.Message, "OK");
}
}
public static async Task <IEnumerable <T> > WhereAsync <T>(
this ITableDataStore <T> store, Func <T, bool> predicate)
where T : EntityData
{
var items = await store.GetItemsAsync().ConfigureAwait(false);
return(items.Where(predicate));
}
public override async void ViewDidLoad()
{
base.ViewDidLoad();
client = new EasyMobileServiceClient();
client.Initialize("http://xamarin-todo-sample.azurewebsites.net");
client.RegisterTable<ToDo>();
client.FinalizeSchema();
dataStore = client.Table<ToDo>();
await dataStore.Sync();
items = await dataStore.GetItemsAsync();
}
public override async void ViewDidLoad()
{
base.ViewDidLoad();
client = new EasyMobileServiceClient();
client.Initialize("http://xamarin-todo-sample.azurewebsites.net");
client.RegisterTable <ToDo>();
client.FinalizeSchema();
dataStore = client.Table <ToDo>();
await dataStore.Sync();
items = await dataStore.GetItemsAsync();
}
private async Task ExecuteRefreshCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
Exception exceptionToDisplay = null;
try
{
var cancellationToken = _cancellationTokenSource.Token;
var items = await _table.GetItemsAsync().ConfigureAwait(true);
if (!cancellationToken.IsCancellationRequested)
{
Items.Clear();
foreach (var item in items)
{
Items.Add(item);
}
}
}
catch (OperationCanceledException)
{
}
catch (Exception ex)
{
exceptionToDisplay = ex;
}
finally
{
IsBusy = false;
}
if (exceptionToDisplay != null)
{
await Application.Current.MainPage.DisplayAlert("Error", exceptionToDisplay.Message, "OK");
}
}
async Task GetSpeakers()
{
if (IsBusy)
{
return;
}
Exception error = null;
try
{
IsBusy = true;
var items = await table.GetItemsAsync();
Speakers.Clear();
foreach (var item in items)
{
Speakers.Add(item);
}
}
catch (Exception ex)
{
Debug.WriteLine("Error: " + ex);
error = ex;
}
finally
{
IsBusy = false;
}
if (error != null)
{
await Application.Current.MainPage.DisplayAlert("Error!", error.Message, "OK");
}
}
public Task <IEnumerable <Coffee> > GetCoffees() => table.GetItemsAsync();
public Task <IEnumerable <Cache> > GetCaches() => cacheTable.GetItemsAsync();