public BatchesViewModel()
{
m_addNewBatchCommand = new RelayCommand <RecipeDataModel>(AddNewBatch, CanAddNewBatch);
m_deleteBatchCommand = new RelayCommand <BatchDataModel>(DeleteBatch);
m_addGravityReadingCommand = new RelayCommand(AddGravityReading, CanAddGravityReading);
m_deleteGravityReadingCommand = new RelayCommand <GravityReadingDataModel>(DeleteGravityReading);
List <Style> beerStyles = RecipeUtility.GetAvailableBeerStyles().OrderBy(style => style.Name).ToList();
m_availableRecipes = new ObservableCollection <RecipeDataModel>(RecipeUtility.GetSavedRecipes(beerStyles));
m_savedBatches = new ObservableCollection <BatchDataModel>(BatchUtility.GetSavedBatches(m_availableRecipes));
CurrentBatch = m_savedBatches.FirstOrDefault();
}