Convert CollectionView.CurrentItem to a DataRow?

I'm trying to convert MSDN's video on "How Do I: Create a Simple Data Entry Form in WPF?" in VB to C#. I'm stuck at 20:11.

I started by creating a Typed DataSet and a CollectionView:

private CustomerDataSet CustomerData = new CustomerDataSet();
private CustomerDataSetTableAdapters.CustomersTableAdapter taCust = new CustomerDataSetTableAdapters.CustomersTableAdapter();
private CustomerDataSetTableAdapters.TableAdapterManager taManager = new CustomerDataSetTableAdapters.TableAdapterManager();
private CollectionView View;

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    this.taCust.Fill(this.CustomerData.Customers);
    this.DataContext = CustomerData.Customers;

    this.View = (CollectionView)CollectionViewSource.GetDefaultView(this.CustomerData.Customers);
}

I wired navigation buttons fine. My trouble began when I wired the Delete button's event. According to MSDN's CollectionView.CurrentItem documentation, I should be able to convert the CurrentItem to another object. I want to convert CurrentItem to a DataRow (or a Typed DataRow) so I can call the DataRow's Delete method.

private void btnDelete_Click(object sender, RoutedEventArgs e)
{
    if (this.View.CurrentPosition != -1)
    {
            // This doesn't work, throws null exception:
            // DataRow row = this.View.CurrentItem as DataRow;
            // 
            // This doesn't work either, throws null exception: 
            // CustomerDataSet.CustomersRow row = this.View.CurrentItem as CustomerDataSet.CustomersRow;
            MessageBox.Show("row:" + row.ToString());
     }
}

Where am I going wrong? Thanks for any help!