DateTimeValueConverter.cs

namespace Assets
{
    using System;
    using System.Globalization;
    using System.Windows.Data;
    using System.Threading;

    public class DateTimeValueConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value != null)
            {
                var dateTime = (DateTime)value;
                if (dateTime != null && parameter != null)
                {
                    return dateTime.ToString(parameter.ToString(), culture);
                }
            }

            return value;
        }

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

    public class ShortDatePattern
    {
        public override string ToString()
        {
            return Thread.CurrentThread.CurrentCulture.DateTimeFormat.ShortDatePattern;
        }
    }
}