using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.ComponentModel; 
using System.Collections.ObjectModel; 
using System.Windows.Markup; 
 
namespace WpfTreeViewMVVM 
{ 
 
    public class Location : INotifyPropertyChanged 
    { 
        public event PropertyChangedEventHandler PropertyChanged; 
 
        private Int32 _ID; 
        private string _Name; 
        private Int32 _ParentID; 
        private ObservableCollection<Location> _Children; 
 
        public Int32 ID 
        { 
            get { return _ID; } 
            set 
            { 
                _ID = value; 
                this.OnPropertyChanged("ID"); 
            } 
        } 
 
        public string Name 
        { 
            get { return _Name; } 
            set 
            { 
                _Name = value; 
                this.OnPropertyChanged("Name"); 
            } 
        } 
 
        public Int32 ParentID 
        { 
            get { return _ParentID; } 
            set 
            { 
                _ParentID = value; 
                this.OnPropertyChanged("ParentID"); 
            } 
        } 
 
        public ObservableCollection<Location> Children 
        { 
            get { return _Children; } 
            set { _Children = value; } 
        } 
 
        #region Internals 
        protected void OnPropertyChanged(string propertyName) 
        { 
            if (this.PropertyChanged != null) this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); 
        } 
        #endregion 
    } 
} 

 
using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Collections.ObjectModel; 
using WpfTreeViewMVVM.Properties; 
 
namespace WpfTreeViewMVVM 
{ 
    public static class DataGenerator 
    { 
        public static ObservableCollection<Location> Locations() 
        { 
            ObservableCollection<Location> _locations = new ObservableCollection<Location>(); 
 
            using (Model1Container _dc = new Model1Container()) 
            { 
                var _root = from rec in _dc.Names 
                            where rec.ParentID == null 
                            select rec; 
                if (_root.Count() > 0) 
                { 
                    foreach (Names _n in _root) 
                    { 
                        Location _new = new Location(); 
                        _new.ID = _n.ID; 
                        _new.Name = _n.Name; 
                        _new.Children = GetChildren(_new); 
 
                        _locations.Add(_new); 
                    } 
 
                } 
 
            } 
 
            return _locations; 
        } 
 
        public static ObservableCollection<Location> GetChildren(Location par_LocationParent) 
        { 
            ObservableCollection<Location> _locationResult = new ObservableCollection<Location>(); 
 
            using (Model1Container _dc = new Model1Container()) 
            { 
                var _children = from rec in _dc.Names 
                                where rec.ParentID == par_LocationParent.ID 
                                select rec; 
                if (_children.Count() > 0) 
                { 
                    foreach (Names _n in _children) 
                    { 
                        Location _new = new Location(); 
                        _new.ID = _n.ID; 
                        _new.Name = _n.Name; 
                        _new.Children = GetChildren(_new); 
 
                        _locationResult.Add(_new); 
                    } 
                } 
            } 
 
            return _locationResult; 
        } 
    } 
 
} 

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.ComponentModel; 
using System.Windows.Input; 
using System.Collections.ObjectModel; 
 
namespace WpfTreeViewMVVM 
{ 
    public class MainViewModel : INotifyPropertyChanged 
    { 
        private ObservableCollection<Location> _Locations; 
 
        public MainViewModel() 
        { 
            // Set Sample Tree Data 
            Locations = DataGenerator.Locations(); 
        } 
 
        public ObservableCollection<Location> Locations 
        { 
            get { return _Locations; } 
            private set 
            { 
                if (_Locations == value) 
                { 
                    return; 
                } 
                _Locations = value; 
                this.NotifyPropertyChanged("Locations"); 
            } 
        } 
 
        #region INotifyPropertyChanged 
        public event PropertyChangedEventHandler PropertyChanged; 
        private void NotifyPropertyChanged(String info) 
        { 
            if (PropertyChanged != null) 
            { 
                PropertyChanged(this, new PropertyChangedEventArgs(info)); 
            } 
        } 
        #endregion 
 
    } 
} 

<Window x:Class="WpfTreeViewMVVM.MainWindow" 
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        Title="MainWindow" Height="350" Width="525"> 
  <StackPanel> 
        <TreeView ItemsSource="{Binding Locations}" Width="300" Height="300"> 
            <HierarchicalDataTemplate ItemsSource="{Binding Children}"> 
                <TextBlock Text="{Binding Name}"/> 
            </HierarchicalDataTemplate> 
        </TreeView> 
    </StackPanel> 
</Window>