Adding some new controls to the project

In this section, we are going to use two controls that are only available to Windows applications with WinUI. We are going to change the Save button to SplitButton to allow users to save and return to a list of items, or save and continue adding another item to the item details page. Then, we will add a TeachingTip control to inform users of the new saving capabilities. To follow along with these steps, you can use the Start project on GitHub (https://github.com/PacktPublishing/-Learn-WinUI-3.0/tree/master/Chapter05/Start). Let's start by updating the Save button.

Using the SplitButton control

Follow these steps:

1. First, in ItemDetailsViewModel, add a new SaveItemAndContinue method to be bound to the Click event of our new SplitButton:

   public void SaveItemAndContinue()
   {
       SaveItem();
       _itemId = 0;
       ItemName = "";
       SelectedMedium...