add button in wpf
<Window x:Class="AnimatedButton.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="AnimatedButton" Height="300" Width="300"
Background="Black">
<!-- Buttons arranged vertically inside a StackPanel. -->
<StackPanel HorizontalAlignment="Left">
<Button>Button 1</Button>
<Button>Button 2</Button>
<Button>Button 3</Button>
</StackPanel>
</Window>