using System;
using System.Globalization;
public class Test
{
public static void Main()
{
var info = new DateTimeFormatInfo() { ShortDatePattern = "M/yy/d" };
Console.WriteLine(DateTime.Now.ToString("M/yy/d"));
Console.WriteLine(DateTime.ParseExact(DateTime.Now.ToString("M/yy/d"), "M/yy/d", null));
Console.WriteLine(DateTime.ParseExact(DateTime.Now.ToString("M/yy/d"), "M/yy/d", info));
}
}
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