文本抛出FormatException时的DateTime.ParseExact工作日

using System;

public class Program
{
    public static void Main()
    {
        string dateString = "2022-01-01"; // 假设要转换的日期字符串
        string format = "yyyy-MM-dd"; // 假设日期字符串的格式

        DateTime date;
        if (DateTime.TryParseExact(dateString, format, null, System.Globalization.DateTimeStyles.None, out date))
        {
            if (IsWeekday(date))
            {
                Console.WriteLine("是工作日");
            }
            else
            {
                Console.WriteLine("不是工作日");
            }
        }
        else
        {
            Console.WriteLine("日期格式不正确");
        }
    }

    public static bool IsWeekday(DateTime date)
    {
        return date.DayOfWeek != DayOfWeek.Saturday && date.DayOfWeek != DayOfWeek.Sunday;
    }
}