如何将 Datetime 中英文文本中的月份名称转换为 C# 中的阿拉伯文本？

using System;
using System.Globalization;

class Program
{
    static void Main(string[] args)
    {
        DateTime dateTime = DateTime.Now;
        string monthName = dateTime.ToString("MMMM", new CultureInfo("en-US"));
        int arabicMonth = GetArabicMonth(monthName);
        Console.WriteLine($"英文月份名称：{monthName}");
        Console.WriteLine($"阿拉伯文本：{arabicMonth}");
    }

    static int GetArabicMonth(string monthName)
    {
        switch (monthName)
        {
            case "January":
                return 1;
            case "February":
                return 2;
            case "March":
                return 3;
            case "April":
                return 4;
            case "May":
                return 5;
            case "June":
                return 6;
            case "July":
                return 7;
            case "August":
                return 8;
            case "September":
                return 9;
            case "October":
                return 10;
            case "November":
                return 11;
            case "December":
                return 12;
            default:
                throw new ArgumentException("Invalid month name");
        }
    }
}