private void DeleteExecute()
        {
            if (recipe != null)
            {
                MessageBoxResult result = MessageBox.Show("Do you realy want to delete this Recipe?", "Delete Report", MessageBoxButton.YesNo);

                if (result == MessageBoxResult.Yes)
                {
                    service.DeleteRecipe(recipe);
                    IsDeleted = true;
                    MessageBox.Show("Recipe is deleted.", "Notification", MessageBoxButton.OK);
                    RecipeList = service.GetAllRecipes();
                }
            }
            else
            {
                MessageBox.Show("Please select the recipe that you want to delete.");
            }
        }