Viewing word documents in WPF

private void button1_Click(object sender, RoutedEventArgs e)
{
    // Create OpenFileDialog 
    Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();

   
    dlg.DefaultExt = ".doc";
    dlg.Filter = "Word documents|*.doc;*.docx";

    
    Nullable<bool> result = dlg.ShowDialog();

   
    if (result == true)
    {
        // Open document 
        string filename = dlg.FileName;
        FileNameTextBox.Text = filename;

        var document = DocX.Load(filename);

        string contents = document.Text;

     
    } 
}