using System;

using System.Globalization;

public class Program

{

    public static void Main()

    {

        string dateString = "2023-12-12";

​

        // Parse the date string using the specified format

        DateTime parsedDate = DateTime.ParseExact(dateString, "yyyy-MM-dd", null);

​

        // Set culture to Thai

        CultureInfo thaiCulture = new CultureInfo("th-TH");

​

        // Format the date in Thai

        string formattedDate = parsedDate.ToString("dd MMMM yyyy", thaiCulture);

​

        Console.WriteLine($"Formatted date in Thai: {formattedDate}");

    }

}