NullableDateTimeConverter.cs

namespace NeuroAccessMaui.UI.Converters
{
    public class NullableDateTimeConverter : IValueConverter
    {
        public object Convert(object? value, Type targetType, object? parameter, System.Globalization.CultureInfo culture)
        {
            // Ensure value is DateTime? and provide DateTime.Now if null
            return (value as DateTime?) ?? DateTime.Today.Date;
        }
 
        public object? ConvertBack(object? value, Type targetType, object? parameter, System.Globalization.CultureInfo culture)
        {
            // If the value is a DateTime, return it; otherwise, return null
            return value is DateTime DateTime ? DateTime : null;
        }
    }
}