using System.Collections.Generic;
using System.Globalization;
public static void Main()
string s = "2023-06-01 17:10:57.877";
if(DateTime.TryParseExact(s, "yyyy-MM-dd mm:HH:ss.fff", CultureInfo.InvariantCulture, DateTimeStyles.None, out var dateparse))
Console.WriteLine(dateparse.ToShortTimeString());
Console.WriteLine(dateparse.ToShortDateString());