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As the ToolTip property is of object type, you can assign anything to it, including various UI controls. Hence, it helps you to customize the UI of the tooltip with a much richer experience.

Let's modify the Tooltip property of the third button in the preceding example. Place a few TextBlock and Border controls in a StackPanel to design the UI, as shared in the following XAML code snippet:

<Button Content="Save" Width="60" Height="30"  
    Margin="4"> 
    <Button.ToolTip> 
        <StackPanel> 
            <TextBlock FontWeight="Bold" 
                       Text="Save File" /> 
            <TextBlock Text="Clicking on this button, 
                       saves the file to disk" 
                       FontSize="10" /> 
            <Border BorderBrush="Silver"  
                    BorderThickness="0,1,0,0"  
                 ...