teachers_mvvm2/Teachers/Converters/DateConverter.cs

using Avalonia.Data.Converters;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Teachers.Converters
{
    internal class DateConverter : IValueConverter
    {
        public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            if (value is DateTime) return new DateTimeOffset((DateTime)value, TimeSpan.Zero);
            return null;
        }

        public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            if (value is DateTimeOffset date) return new DateTime(date.Year, date.Month, date.Day);
            return null;
        }
    }
}