WPF_cs代码给button添加图标

//XAML代码
<Button>
    <WrapPanel Background = "#fff" >
        <Image Name="TJimg"  Width="15" Height="15"/>
        <TextBlock Text = "新添加" Foreground="DarkBlue" VerticalAlignment="center" />
    </WrapPanel>
</Button>
//cs代码  通过点击事件来给按钮添加图片
private void btn_Click(object sender, RoutedEventArgs e)
{
    TJimg.Source = new BitmapImage(new Uri(@"/解决方案名称;component/Img/图片.png", UriKind.Relative));
    
}