async Task ExecuteLoadItemsCommand() { if (IsBusy) { return; } IsBusy = true; try { Formations.Clear(); var items = await DataStore.RefreshDataAsync(); foreach (var item in items) { Formations.Add(item); } } catch (Exception ex) { Debug.WriteLine(ex); } finally { IsBusy = false; } }
/* isp AddFormation() * * Input variables: * battleFormation = * * State variables: * * */ public void AddFormation(BattleFormation battleFormation) { if (battleFormation is null) { throw new ArgumentNullException(nameof(BattleFormation)); } Formations?.Add(battleFormation); }