public TransactionsViewModel()
{
Title = "Transactions";
Transactions = new ObservableCollection <Transaction>();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
MessagingCenter.Subscribe <NewTransactionPage, Transaction>(this, "AddItem", async(obj, item) =>
{
var newItem = item as Transaction;
var result = await TransactionDataStore.AddItemAsync(newItem);
if (result)
{
Transactions.Add(newItem);
}
});
}
async Task ExecuteLoadItemsCommand()
{
IsBusy = true;
try
{
Transactions.Clear();
var items = await TransactionDataStore.GetItemsAsync(true);
foreach (var item in items)
{
Transactions.Add(item);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
