VPet/VPet.Solution/Converters/NullToFalseConverter.cs

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

namespace VPet.House.Converters;

public class NullToFalseConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return value is not null;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}