simple binding wpf listbox to datatable by code / einfaches binden einer wpf listbox an eine datatable mittels code

xaml: add Listbox and Loaded:
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525"
        Loaded="Window_Loaded">
           


CodeBehind:
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            SqlConnection sqlCon = new SqlConnection("server=192.168.1.231; database=hewmicTest;Trusted_Connection=True");
            sqlCon.Open();
            SqlDataAdapter sqlDa = new SqlDataAdapter("select * from testTable", sqlCon);
            DataTable dt = new DataTable();
            sqlDa.Fill(dt);
            lb.ItemsSource = dt.Rows;
            lb.DisplayMemberPath = "ItemArray[1]";
            sqlCon.Close();
            //MessageBox.Show("ConnState=" + sqlCon.State);
        }