Добавляйте строки только в один набор столбцов таблицы данных, остальные столбцы должны оставаться такими же

Я новичок в WPF, ниже моя текущая реализация XAML:

<Window x:Class = "TestingWPFPage.MainWindow"
    xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d = "http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc = "http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:col = "clr-namespace:System.Collections;assembly=mscorlib"
    xmlns:local = "clr-namespace:TestingWPFPage"
    mc:Ignorable = "d"
    Title = "MainWindow" Height = "400" Width = "600">
<Window.Resources>
    <col:ArrayList x:Key = "arrList">
        <col:DictionaryEntry Key = "Fixed" Value = "1"/>
        <col:DictionaryEntry Key = "Variable" Value = "2"/>
    </col:ArrayList>        
</Window.Resources>
<Border Padding = "2">
    <Grid>
        <ScrollViewer ScrollViewer.VerticalScrollBarVisibility = "Auto">
            <DataGrid Margin = "5,5,5,40" AutoGenerateColumns = "False" CanUserAddRows = "True" CanUserDeleteRows = "True" VerticalAlignment = "Stretch" Height = "400" Name = "dataGrid1" ItemsSource = "{Binding GridCollection}">
                <DataGrid.Columns>

                    <!-- 1st Column - Select All Checkbox -->
                    <DataGridTemplateColumn>
                        <DataGridTemplateColumn.Header>
                            <CheckBox Content = "Select All" x:Name = "headerCheckBox" />
                        </DataGridTemplateColumn.Header>
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <CheckBox Name = "chkSelectAll" VerticalAlignment = "Center"  HorizontalAlignment = "Center" IsChecked = "{Binding IsChecked, ElementName=headerCheckBox, Mode=OneWay}"/>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>

                    <!-- 2nd Column - Consist - Select Fixed or Variable -->
                    <DataGridComboBoxColumn Header = "Consist" Width = "*"  SelectedValueBinding = "{Binding Active}" ItemsSource = "{StaticResource arrList}" DisplayMemberPath = "Key" SelectedValuePath = "Value"/>

                    <!-- 3rd Column - Vehicle Count -->
                    <DataGridTextColumn Header = "Vehicle Count" Width = "*" Binding = "{Binding VehicleCount}"/>


                    <!-- 4th Column - Vehicles List -->
                    <DataGridTemplateColumn Header = "Vehicles" Width = "*">
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel x:Name  = "vehicleStackPanel" Orientation = "Horizontal" Margin = "3"/>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>

                    <!-- 5th Column - VATCs Selection Checkbox -->
                    <DataGridTemplateColumn Header = "VATCs" Width = "*">
                        <DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <StackPanel Orientation = "Horizontal" Margin = "3">
                                    <CheckBox x:Name = "selectVATCA" IsChecked = "False" Margin = "3"/>
                                    <Label Content = "A" Margin = "3"/>
                                    <CheckBox x:Name = "selectVATCB" IsChecked = "False" Margin = "3"/>
                                    <Label Content = "B" Margin = "3"/>
                                </StackPanel>
                            </DataTemplate>
                        </DataGridTemplateColumn.CellTemplate>
                    </DataGridTemplateColumn>

                    <!-- 6th Column - Region -->
                    <DataGridTextColumn Header = "Region" Width = "0.8*" Binding = "{Binding Region}"/>

                    <!-- 7th Column - Segment -->
                    <DataGridTextColumn Header = "Segment" Width = "0.8*" Binding = "{Binding Segment}"/>

                </DataGrid.Columns>
            </DataGrid>
        </ScrollViewer>
        <Button Height = "20" Width = "60" HorizontalAlignment = "Left" Name = "InitTrain" Click = "InitTrain_Click" VerticalAlignment = "Bottom" Margin = "38,0,0,10">Initialize</Button>            
    </Grid>
</Border>

Я ищу такую ​​реализацию, что панели стека должны быть добавлены в столбцы Транспортные средства.

Я пытаюсь получить доступ к ссылке на элемент управления из xaml в файл кода, но не могу найти ссылку. Ниже мой код позади

   public partial class MainWindow : Window, INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;
    int vehicleCount = 0;
    int region = 0;
    int segment = 0;
    TextBox txtbox = new TextBox();

    // Consist Combobox Items
    public enum Consist { Fixed, Variable };


    public int VehicleCount
    {
        get { return vehicleCount; }
        set
        {
            vehicleCount = value;
            OnPropertyChanged("VehicleCount");

        }
    }

    public int Region
    {
        get { return region; }
        set
        {
            region = value;
            OnPropertyChanged("Region");
        }
    }
    public int Segment
    {
        get { return segment; }
        set
        {
            segment = value;
            OnPropertyChanged("Segment");
        }
    }

    public Consist ConsistList { get; set; }
    public string Vehicles { get; set; }
    public string VATCs { get; set; }

    public MainWindow()
    {
        InitializeComponent();

        for (int i = 1; i <= vehicleCount; i++)
        {
            txtbox.Text = "textbox" + Convert.ToString(i);
            this.vehicleStackPanel.Childern.Add(txtbox);
        }

    }

    private void InitTrain_Click(object sender, RoutedEventArgs e)
    {

    }

    private void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }

}

}

Есть ли способ сделать это в XAML, или нам нужен код для этого, если да - как мне продолжить?