C# WPF ボタンにクリックイベントを設定する

<Window
    x:Class="sample.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:local="clr-namespace:sample"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    Title="MainWindow"
    Width="901"
    Height="530"
    mc:Ignorable="d">
    <Grid>
        <Button
            Width="176"
            Height="68"
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Click="Button_Click"
            Content="clear" />
    </Grid>
</Window>