aistudio-wpf-diagram/AIStudio.Wpf.DiagramDesigner/Converters/NullOrEmptyToBoolConverter.cs

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

namespace AIStudio.Wpf.DiagramDesigner
{
    public class NullOrEmptyToBoolConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return string.IsNullOrEmpty(value?.ToString());
        }

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

    public class NotNullOrEmptyToBoolConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return !string.IsNullOrEmpty(value?.ToString());
        }

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