aistudio-wpf-diagram/AIStudio.Wpf.DiagramHelper/Converters/NullableToBooleanConverter.cs

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

namespace AIStudio.Wpf.DiagramHelper.Converters
{
    public class NullableToBooleanConverter : IValueConverter
    {
        public bool NullValue { get; set; } = false;
        public bool NotNullValue { get; set; } = true;

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return value == null ? NullValue : NotNullValue;
        }

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