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

using System;
using System.Globalization;
using System.Linq;
using System.Windows;
using System.Windows.Data;

namespace ComPDFKit.Controls.Common
{
    public class HomePageHeightConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            if (values[0] == null || values[1] == null)
            {
                return false;
            }
            else
            {
                return (double)values[0] - (double)values[1];
            }
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            return null;
        }
    }
}