Convers/ValueConver.cs

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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
using System.Windows.Media;

namespace WPFDemo.Convers
{
    public class IndentConverter : IValueConverter
    {

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            double colunwidth = 10;
            double left = 0.0;


            UIElement element = value as TreeViewItem;
            while (element.GetType() != typeof(TreeView))
            {
                element = (UIElement)VisualTreeHelper.GetParent(element);
                if (element.GetType() == typeof(TreeViewItem))
                    left += colunwidth;
            }
            return new Thickness(left, 0, 0, 0);
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

    }

    public class BoolToVisible : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if ((bool)value)
                return Visibility.Visible;
            else
                return Visibility.Collapsed;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public class VisibleToReverse : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if ((Visibility)value == Visibility.Visible)