Привязка WPF к таблице данных ADO.NET

using System;
using System.Collections.Generic;
using System.Text;
    
// Подключение пространства имен для DataTable
using System.Data;
    
namespace DataBindingTable
{
    // Класс свойств доступа к данным таблицы Employees
    class Employees1
    {
        //********************************************************
        // Cвойства доступа для привязки и базовые поля  
        //********************************************************
        // Для списка надо массив
        string[] listFullName = null;
        public string[] ListFullName
        {
            get
            {
                if (listFullName == null)
                {
                    listFullName = new string[dt.Rows.Count];
                    int i = 0;
                    // Перебираем записи и заполняем массив для списка
                    foreach (DataRow row in dt.Rows)
                    {
                        listFullName[i] = (string)dt.Rows[i]["FullName"];
                        i++;
                    }
                }
                return listFullName;
            }
        }
        int employeeID;
        public int EmployeeID
        {
            get { return employeeID; }
        }
        string fullName;
        public string FullName
        {
            get { return fullName; }
        }
        string address;
        public string Address
        {
            get { return address; }
        }
        string birthDate;
        public string BirthDate
        {
            get { return birthDate; }
        }
        string region;
        public string Region
        {
            get { return region; }
        }
    
        // Навигация по таблице ADO.NET
        public Employees1 GetEmployee(int ID)
        {
            // Проверяем границы массива
            if (ID < 0 || ID >= dt.Rows.Count)
                return null;
    
            // Наполняем свойства полями записи ID
            // для последующего их извлечения свойствами
            // в привязанные элементы интерфейса.
            // Входные параметры приводятся явно 
            // к тому типу, который ожидает метод
            return new Employees1(
                (int)dt.Rows[ID]["EmployeeID"],
                (string)dt.Rows[ID]["FullName"],
                (string)dt.Rows[ID]["Address"],
                dt.Rows[ID]["BirthDate"].ToString(),
                dt.Rows[ID]["Region"].ToString()
                );
        }
    
        // Конструктор с параметрами
        public Employees1(int employeeID,
            string fullName, string address,
            string birthDate, string region)
        {
            this.employeeID = employeeID;
            this.fullName = fullName;
            this.address = address;
            this.birthDate = birthDate;
            this.region = region;
        }
    
        // Конструктор по умолчанию 
        public Employees1() { }
    
        // Ссылка на исходную таблицу-объект ADO.NET
        DataTable dt = App.StoreNorthwindDB.LoadTableEmployees();
    }
}

<Window x:Class="DataBindingTable.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Height="300" Width="300"
    Title="Привязка элементов к БД" 
    MinHeight="300" 
    MinWidth="300"
    WindowStartupLocation="CenterScreen" 
    Loaded="Window_Loaded"
    >
    <Window.Resources>
        <SolidColorBrush x:Key="ControlColorBrush" 
            Color="{x:Static SystemColors.ControlColor}" />
    </Window.Resources>
    <Grid Background="{StaticResource ResourceKey=ControlColorBrush}">
        <TabControl>
            <!-- Привязка к таблице Employees через объект -->
            <TabItem Header="Page1">
                <Grid 
                    Name="gridEmployees1"
                    >
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition />
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                        <RowDefinition Height="Auto" />
                    </Grid.RowDefinitions>
                    
                    <ListBox 
                        Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2"
                        Margin="0,0,0,3"
                        ScrollViewer.VerticalScrollBarVisibility="Auto"
                        Name="listEmployees1"
                        SelectionChanged="listEmployeeslab72_SelectionChanged"
                        />
                    
                    <TextBlock Grid.Row="1" Margin="0,0,5,0">EmployeeID:</TextBlock>
                    <TextBox Grid.Row="1" Grid.Column="1" 
                        Text="{Binding Path=EmployeeID, Mode=OneWay}"
                        />
    
                    <TextBlock Grid.Row="2">FullName:</TextBlock>
                    <TextBox Grid.Row="2" Grid.Column="1" 
                        Text="{Binding Path=FullName, Mode=OneWay}"
                        />
    
                    <TextBlock Grid.Row="3"></TextBlock>
                    <TextBox Grid.Row="3" Grid.Column="1" 
                        Text="{Binding Path=Address, Mode=OneWay}"
                        />
    
                    <TextBlock Grid.Row="4">BirthDate:</TextBlock>
                    <TextBox Grid.Row="4" Grid.Column="1" 
                        Text="{Binding Path=BirthDate, Mode=OneWay}"
                        />
    
                    <TextBlock Grid.Row="5">Region:</TextBlock>
                    <TextBox Grid.Row="5" Grid.Column="1" 
                        Text="{Binding Path=Region, Mode=OneWay}"
                        />
                </Grid>
            </TabItem>
        </TabControl>
    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
    
namespace DataBindingTable
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
    
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            Page1();
        }
    
        #region Вкладка Page1
        Employees1 employees1;
        private void Page1()
        {
            // Загружаем данные и настраиваем источник привязки
            employees1 = new Employees1();
            listEmployees1.SelectedIndex = 0;
            listEmployees1.Focus();
            gridEmployees1.DataContext = employees1.GetEmployee(0);
            listEmployees1.ItemsSource = employees1.ListFullName;
            listEmployees1.DisplayMemberPath = employees1.FullName;
        }
    
        private void listEmployeeslab72_SelectionChanged(
            object sender, SelectionChangedEventArgs e)
        {
            gridEmployees1.DataContext = 
                employees1.GetEmployee(listEmployees1.SelectedIndex);
        }
        #endregion
    }
}

<TextBlock Grid.Row="1" Margin="0,0,5,0"<EmployeeID:</TextBlock<
                    <TextBox Grid.Row="1" Grid.Column="1" 
                        Text="{Binding Path=EmployeeID, Mode=OneWay}"
                        Focusable="False"
                        /<
    
                    <TextBlock Grid.Row="2"<FullName:</TextBlock<
                    <TextBox Grid.Row="2" Grid.Column="1" 
                        Text="{Binding Path=FullName, Mode=OneWay}"
                        Focusable="False"
                        /<
    
                    <TextBlock Grid.Row="3"<Address:</TextBlock<
                    <TextBox Grid.Row="3" Grid.Column="1" 
                        Text="{Binding Path=Address, Mode=OneWay}"
                        Focusable="False"
                        /<
    
                    <TextBlock Grid.Row="4"<BirthDate:</TextBlock<
                    <TextBox Grid.Row="4" Grid.Column="1" 
                        Text="{Binding Path=BirthDate, Mode=OneWay}"
                        Focusable="False"
                        /<
    
                    <TextBlock Grid.Row="5"<Region:</TextBlock<
                    <TextBox Grid.Row="5" Grid.Column="1" 
                        Text="{Binding Path=Region, Mode=OneWay}"
                        Focusable="False"
                       /<