private void ReadRecipeExecute()
 {
     try
     {
         if (recipe != null)
         {
             recipe = service.GetSelectedRecipe(recipe.recipeId);
             ShowRecipe showRecipe = new ShowRecipe(recipe);
             showRecipe.ShowDialog();
         }
         else
         {
             MessageBox.Show("Please select the recipe that you want to read.");
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.ToString());
     }
 }