Using data binding

When building graphical user interfaces, you will often want to bind a property of one control to another, or to some data.

Binding to elements

The simplest type of binding is between two elements. One element acts as a source for a value and the other element acts as the target:

1. In CategoriesPage.xaml, under the existing button in the vertical stack layout, add a label for instructions, another label to show the current degree of rotation, a slider for selecting a rotation, and a rainbow square to rotate, as shown highlighted in the following markup:

   <?xml version="1.0" encoding="utf-8" ?>
   <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
                xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
                x:Class="Northwind.Maui.Client.CategoriesPage"
                Background="{StaticResource rainbow}"
                Title="Categories...