async Task ExecuteLoadItemsCommand()
{
if (IsBusy)
{
return;
}
IsBusy = true;
try
{
Items.Clear();
var items = await RecipeDataStore.GetAllAsync(true);
foreach (var item in items)
{
Items.Add(item);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
finally
{
IsBusy = false;
}
}
private void HandleRecipeTapped(string obj)
{
SelectedRecipe = RecipeDataStore.GetItemAsync(obj).Result;
IsDetailViewVisible = false;
IsWebViewVisible = true;
RecipeWebViewSource = SelectedRecipe.RecipeUrl;
}
public RecipesViewModel()
{
Title = "Recipes List";
Items = new ObservableCollection <Recipe>();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
MessagingCenter.Subscribe <NewRecipePage, Recipe>(this, "AddItem", async(obj, item) =>
{
var newItem = item as Recipe;
Items.Add(newItem);
await RecipeDataStore.AddAsync(newItem);
});
}
public RecipeViewModel()
{
DataStore = new RecipeDataStore();
Title = "Browse Recipes";
Recipes = new ObservableCollection <Recipe>();
LoadItemsCommand = new Command(async() => await ExecuteLoadItemsCommand());
reloads = 0;
MessagingCenter.Subscribe <NewFoodItemPage, Recipe>(this, "AddItem", async(obj, item) =>
{
var newItem = item;
Recipes.Add(newItem);
await DataStore.AddItemAsync(newItem);
});
}