Как мне сначала использовать MVVM с базой данных EF 6?

Question

У меня есть проект WPF, который читает записи базы данных. Я построил модель с EF 6 из базы данных.

Теперь я немного запутался, как применить шаблон MVVM.

Это класс модели , созданный из EF 6:

public partial class Folder
    {
        public string FolderPath { get; set; }
        public string UserGroup { get; set; }
        public string Permission { get; set; }
        public string AccessControllType { get; set; }
        public string IsInherited { get; set; }
        public int FolderId { get; set; }
    }

Это MainWindow.xaml.cs :

public partial class MainWindow : Window
{
    private ADAccessRightsEntities _context = new ADAccessRightsEntities();
    public MainWindow()
    {
        InitializeComponent();
    }

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {

        System.Windows.Data.CollectionViewSource folderViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("folderViewSource")));
        

        folderViewSource.Source = _context.Folders.ToList();

    }

    protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
        {
            base.OnClosing(e);
            this._context.Dispose();
        }
}

Это мой код xaml:

    <Window x:Class="PermissoinViewer.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:local="clr-namespace:PermissoinViewer"
            mc:Ignorable="d"
            Title="MainWindow" Height="450" Width="800" Loaded="Window_Loaded">
        <Window.Resources>
            <CollectionViewSource x:Key="folderViewSource" d:DesignSource="{d:DesignInstance {x:Type local:Folder}, CreateList=True}"/>
            <CollectionViewSource x:Key="userGroupViewSource" d:DesignSource="{d:DesignInstance {x:Type local:UserGroup}, CreateList=True}"/>
        </Window.Resources>
        <Grid DataContext="{StaticResource folderViewSource}">
            <DataGrid x:Name="folderDataGrid" AutoGenerateColumns="False" EnableRowVirtualization="True" ItemsSource="{Binding}" Margin="10,10,313,209" RowDetailsVisibilityMode="VisibleWhenSelected">
                <DataGrid.Columns>
                    <DataGridTextColumn x:Name="accessControllTypeColumn" Binding="{Binding AccessControllType}" Header="Access Controll Type" Width="SizeToHeader"/>
                    <DataGridTextColumn x:Name="folderIdColumn" Binding="{Binding FolderId}" Header="Folder Id" Width="SizeToHeader"/>
                    <DataGridTextColumn x:Name="folderPathColumn" Binding="{Binding FolderPath}" Header="Folder Path" Width="SizeToHeader"/>
                    <DataGridTextColumn x:Name="isInheritedColumn" Binding="{Binding IsInherited}" Header="Is Inherited" Width="SizeToHeader"/>
                    <DataGridTextColumn x:Name="permissionColumn" Binding="{Binding Permission}" Header="Permission" Width="SizeToHeader"/>
                    <DataGridTextColumn x:Name="userGroupColumn" Binding="{Binding UserGroup}" Header="User Group" Width="SizeToHeader"/>
                </DataGrid.Columns>
            </DataGrid>
</Grid>
</Window>

Как мне теперь добавить класс VM?

Edit1: Я создал класс FolderVM.

class FolderVM : AViewModel
{
    private Folder folder;

    public FolderVM(Folder folder)
    {
        this.folder = folder;
    }

    public string FolderPath
    {
        get => folder.FolderPath;
        set
        {
            folder.FolderPath = value;
            CallPropertyChanged();
        }
    }

    public string UserGroup
    {
        get => folder.UserGroup;
        set
        {
            folder.UserGroup = value;
            CallPropertyChanged();
        }
    }
    public string Permission
    {
        get => folder.Permission;
        set
        {
            folder.Permission = value;
            CallPropertyChanged();
        }
    }
    public string AccessControllType
    {
        get => folder.AccessControllType;
        set
        {
            folder.AccessControllType = value;
            CallPropertyChanged();
        }
    }
    public string IsInherited
    {
        get => folder.IsInherited;
        set
        {
            folder.IsInherited = value;
            CallPropertyChanged();
        }
    }

    public int FolderId
    {
        get => folder.FolderId;
        set
        {
            folder.FolderId = value;
            CallPropertyChanged();
        }
    }
}

Модель AView:

abstract class AViewModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;
    protected void CallPropertyChanged([CallerMemberName] string property = null) 
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
    }
}

Я хочу отфильтровать их, чтобы в представлении отображалась только c UserGroup. Как мне продолжить?