NullToBoolConverter.cs 472 字节
using System.Globalization;

namespace IndustrialControl.Converters;
public class NullToBoolConverter : IValueConverter
{
    public bool Invert { get; set; } = false;

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        => Invert ? value is null : value is not null;

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        => throw new NotSupportedException();
}