3rdpartylibs/fastreports.wpf/Demos/WPF/Main/Controls/ReportsTreeView.xaml.cs

using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace WpfDemo
{
    public partial class ReportsTreeView : TreeView
    {
        public ReportsTreeView()
        {
            InitializeComponent();
        }
    }

}