kmpdfkit_demo/Demo/Examples/Compdfkit.Controls/Common/Convert/AntiVisibilityConverter.cs

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Data;

namespace ComPDFKit.Controls.Common
{
    [ValueConversion(typeof(Visibility), typeof(Visibility))]
    internal class AntiVisibilityConverter: IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return (Visibility)value == Visibility.Visible ? Visibility.Collapsed : Visibility.Visible;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return (Visibility)value == Visibility.Visible ? Visibility.Collapsed : Visibility.Visible;
        }
    }
}