How to do it...

Please perform the following steps:

1. Open the MainWindow.xaml file from Solution Explorer.
2. Set a smaller size of the Window. Let's set its height to 120 and width to 400.
3. Replace the existing Grid panel with a ViewBox.
4. Add text inside it, using the TextBlock control as follows:

<Viewbox> 
    <TextBlock Text="This is a text, inside a ViewBox" 
               Margin="10"/> 
</Viewbox>

5. Run the application. You will see the following output:

6. Now resize the window and you will see that the text is automatically scaled based on the size of the window: