using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

      System.Globalization.CultureInfo th = new System.Globalization.CultureInfo("th-TH");

     System.Globalization.CultureInfo en = new System.Globalization.CultureInfo("en-US");

        String dtFormat = "dd/MM/yyyy HH:mm";

        String DMY = "dd/MM/yyyy";

        var date = DateTime.ParseExact("22/12/2024", DMY, en); // แปลงวันที่

        DateTime CurDate = DateTime.Now;

        string[] names = DateTimeFormatInfo.CurrentInfo.MonthNames;

        Console.WriteLine (" เมื่อวาน {0}",DateTime.Now.AddDays(-1).ToString("dd-MM-yyyy"));//output dd-MM-yyyy

        Console.WriteLine("date=> {0}", Convert.ToDateTime(DateTime.Now.AddDays(-1)).ToString("dd/MM/yyyy")); //output dd-MM-yyyy

        Console.WriteLine("CurDate-1 => {0}", Convert.ToDateTime(CurDate.AddDays(-1)).ToString("dd/MM/yyyy"));

        Console.WriteLine (" date {0}",date.ToString("yyyy-MM-dd"));

        Console.WriteLine (" names {0}",names);

    }

}