HandyControl/Net35/HandyControl_Net35/Tools/Converter/TreeViewItemMarginConverter.cs

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

namespace HandyControl.Tools.Converter
{
    public class TreeViewItemMarginConverter: IValueConverter
    {

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            var left = 0.0;
            UIElement element = value as TreeViewItem;
            while (element != null && element.GetType() != typeof(TreeView))
            {
                element = (UIElement)VisualTreeHelper.GetParent(element);
                if (element is TreeViewItem)
                    left += 19.0;
            }
            return new Thickness(left, 0, 0, 0);
        }
        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}