ShrlAlgoToolkit/AntDesignWPF/Converters/IsNullConverter.cs

namespace AntDesignWPF.Converters
{
    using System;
    using System.Globalization;
    using System.Windows;
    using System.Windows.Data;

    [ValueConversion(typeof(object), typeof(bool))]
    public class IsNullConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return null == value;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return DependencyProperty.UnsetValue;
        }
    }
}