问返回压缩文件夹和文件名时C#字符已更改

EN

using System;
using System.IO;
using QuantConnect;
using QuantConnect.Securities;
using QuantConnect.Securities.Forex;

namespace TradingDaysFileChecker
{
    class Program
    {
        static void Main(string[] args)
        {
            var startDate = new DateTime(2007, 04, 01);
            var endDate = new DateTime(2016, 07, 25);
            var dataFilePath = @"C:\Users\richa_000\Desktop\exporter\forex\fxcm\minute\";

            var securityType = SecurityType.Forex;
            var ticker = TickType.Trade;
            var marketHoursDatabase = MarketHoursDatabase.FromDataFolder();
            var market = Market.FXCM;
            var symbol = Symbol.Create(ticker.ToString(), securityType, market);
            var marketHoursDbEntry = marketHoursDatabase.GetEntry(symbol.ID.Market, symbol.Value, symbol.ID.SecurityType);

            var exchange = new ForexExchange(marketHoursDbEntry.ExchangeHours);
            var validTradingDays = new DateHandler(startDate, endDate, dataFilePath).IterateOverDateRange(exchange);

            var forexSecuritiesFolders = Directory.GetDirectories(dataFilePath);

                foreach (var validDay in validTradingDays)
                {
                    foreach (var forexSecurity in forexSecuritiesFolders)
                    {
                        var securityName = new DirectoryInfo(forexSecurity).Name.ToString();
                        var formattedFolderName = validDay.ToString("yyyyMMdd_quote");
                        var formattedFileName = validDay.ToString($"yyyyMMdd_{securityName}_minute_quote");

                        var dataFile = dataFilePath + securityName + @"\" + formattedFolderName + @"\" + formattedFileName;

                        if (!File.Exists(dataFile))
                        {
                            Console.WriteLine(dataFile);
                            Console.ReadLine(); // Stopping after the first run while troubleshooting
                        }
                    }
                }
                Console.ReadLine();
        }
    }
}

using System;
using System.Collections.Generic;
using QuantConnect.Securities.Forex;

namespace TradingDaysFileChecker
{
    public class DateHandler
    {
        private DateTime _startDate;
        private DateTime _endDate;

        public DateHandler(DateTime startDate, DateTime endDate, string filePath)
        {
            _startDate = startDate;
            _endDate = endDate;
        }

        public IEnumerable<DateTime> IterateOverDateRange(ForexExchange exchange)
        {
            for (var day = _startDate.Date; day.Date <= _endDate.Date; day = day.AddDays(1))
                if (exchange.IsOpenDuringBar(day.Date, day.Date.AddDays(1), false))
                {
                    yield return day;
                }
        }
    }
}