C# WPF'de Exe Açmak

<Window x:Class="WpfApplication2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Button x:Name="btnProcess" Content="İşlem Başlat" HorizontalAlignment="Left" VerticalAlignment="Top" Click="btnProcess_Click"/>
    </Grid>
</Window>

namespace WpfApplication2
{    
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

         //Esas oğlan
        private void btnProcess_Click(object sender, RoutedEventArgs e)
        {
            Process.Start("calc.exe");
        }

    }
}