private async void SaveRecipeBook(object obj)
        {
            if (string.IsNullOrWhiteSpace(PropertiesName))
            {
                return;
            }

            RecipeBook recipeBook = propertiesObject as RecipeBook;

            recipeBook.Name        = PropertiesName;
            recipeBook.Description = PropertiesDescription;
            if (obj is ListBox)
            {
                recipeBook.Recipes = new ObservableCollection <Recipe>();
                ListBox       lb = obj as ListBox;
                List <string> selectedRecipes = lb.SelectedItems.Cast <string>().ToList();
                foreach (var sr in selectedRecipes)
                {
                    if (string.IsNullOrWhiteSpace(sr))
                    {
                        continue;
                    }
                    Recipe r = RecipeHelper.GetRecipes().Result.Where(x => x.Name == sr).SingleOrDefault();
                    if (r == null)
                    {
                        continue;
                    }
                    recipeBook.Recipes.Add(r);
                }
                ;
            }
            var addedBook = await RecipeBookHelper.AddOrUpdateRecipeBook(recipeBook);

            if (LoginUser.RecipeBooks.Where(x => x.Id == addedBook.Id).SingleOrDefault() == null)
            {
                LoginUser.RecipeBooks.Add(addedBook);
            }
            else
            {
                RecipeBook rb = LoginUser.RecipeBooks.Where(x => x.Name == addedBook.Name).SingleOrDefault();
                LoginUser.RecipeBooks.Remove(rb);
                LoginUser.RecipeBooks.Add(addedBook);
            }
            LoadRecipeBooks();
        }
 private void DeletePropertiesCommand()
 {
     if (propertiesObject is RecipeBook)
     {
         RecipeBookHelper.RemoveRecipeBook(propertiesObject as RecipeBook);
         LoginUser.RecipeBooks.Remove(propertiesObject as RecipeBook);
         LoadRecipeBooks();
     }
     else if (propertiesObject is Recipe)
     {
         RecipeHelper.RemoveRecipe(propertiesObject as Recipe);
         LoadRecipes();
     }
     else if (propertiesObject is Coffee)
     {
         CoffeeHelper.RemoveCoffee(propertiesObject as Coffee);
         LoadCoffees();
     }
     ShowProperties = false;
 }