WPF TreeGrid - 高性能ツリーテーブルコントロール

<Window x:Class="NestedCollectionDemo.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:NestedCollectionDemo"
        xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
        Title="MainWindow"
        Width="525"
        Height="350">
    <Window.DataContext>
        <local:ViewModel />
    </Window.DataContext>
    <Grid x:Name="Root_Grid">
        <syncfusion:SfTreeGrid Name="treeGrid"
                               ChildPropertyName="Children"
                               ItemsSource="{Binding PersonDetails}" />


    </Grid>
</Window>

using Syncfusion.UI.Xaml.TreeGrid;
namespace NestedCollectionDemo
{

    public partial class MainWindow : Window
    {

        public MainWindow()
        {
            InitializeComponent();
            SfTreeGrid treeGrid = new SfTreeGrid();
            ViewModel viewModel = new ViewModel();
            treeGrid.ItemsSource = viewModel.PersonDetails;
            treeGrid.ChildPropertyName = "Children";
            Root_Grid.Children.Add(treeGrid);
        }
    }    
}