class GMapObjGroups{
         long ID{get;set;}
         private bool _IsSeleted;
         public bool IsSelected
        {
            get { return _IsSeleted  ; }
            set
            {
                if(GMapObjects !=null )
                {
                    foreach (GMapObject gMapObject in GMapObjects )
                    {
                        gMapObject.IsSelected = value;
                    }
                }
                _IsSeleted  = value;
                OnPropertyChanged("IsSelected");
            }
         public ObservableCollection< GMapObject> GMapObjects { get; set; }
и
 class GMapObject
   {
      public long  id { get; set; }
      private bool _IsSeleted;
       
        public bool IsSelected
        {
            get { return _IsSeleted; }
            set
            {
                _IsSeleted = value;
                OnPropertyChanged("IsSeleted");
            }
        }

        public virtual GMapObjGroup GMapObjGroup { get; set; }
}
потом 
 MVVM
public class MapObjectsViewModel:ViewModelBase
    {
        private   ObservableCollection<GMapObjGroup> _GMapObjGroups  ;
        public MapObjectsViewModel (ObservableCollection< GMapObjGroup > tGMapObjGroups  )
        {
            GMapObjGroups = tGMapObjGroups;
        }
        public  ObservableCollection< GMapObjGroup > GMapObjGroups {
            get { return _GMapObjGroups; } 
            set
            {
                   _GMapObjGroups = value;
                   OnPropertyChanged("GMapObjGroups");
               
            }
        }
}
и делаю связь с деревом

 mapDataBase.GMapObjGroups.Include("GMapObjects").Load();
             MapObjectsDataContex = new MapObjectsViewModel(mapDataBase.GMapObjGroups.Local);
            
            DataContext = MapObjectsDataContex;

 
<TreeView  Grid.Row="1"   Name="treeObject" 
 ItemsSource="{Binding Path=GMapObjGroups, Mode=TwoWay }" IsTextSearchEnabled="True" IsManipulationEnabled="False" >
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Path=GMapObjects,Mode=TwoWay }">
                         <StackPanel Grid.Column="0" Orientation="Horizontal"  HorizontalAlignment="Stretch"  >
                             <CheckBox x:Name="Parent" IsChecked="{Binding Path=IsSelected, Mode=TwoWay }" 
 Uid="{Binding Path=id}"    Checked="CheckBox_Checked"></CheckBox>
                             
                        </StackPanel>
                   <HierarchicalDataTemplate.ItemTemplate >
                        <DataTemplate >
                               <StackPanel Orientation="Horizontal" Grid.Column="0" >
                                    <CheckBox x:Name="Child" IsChecked="{Binding Path=IsSelected,Mode=TwoWay }" 
Uid="{Binding Path=id}">         </CheckBox>
                                    <TextBlock Text="{Binding Path=ID}"   Margin=" 4,0,0,0"/>

                                </StackPanel>
                     < /DataTemplate>
                            
                        </HierarchicalDataTemplate.ItemTemplate>
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>

 public bool  IsSelected 
        {
            get { return _IsSeleted; }
            set
            {
                _IsSeleted = value;
           OnPropertyChanged("IsSeleted");          
            }
        }