如何在Asp.Net中获取两个日期时间之间的值？

using System;

namespace DateTimeExample
{
    class Program
    {
        static void Main(string[] args)
        {
            DateTime startDateTime = DateTime.Parse("2022-01-01 00:00:00");
            DateTime endDateTime = DateTime.Parse("2022-01-02 12:00:00");

            TimeSpan timeSpan = endDateTime.Subtract(startDateTime);

            Console.WriteLine("时间差：");
            Console.WriteLine("天数：" + timeSpan.TotalDays);
            Console.WriteLine("小时数：" + timeSpan.TotalHours);
            Console.WriteLine("分钟数：" + timeSpan.TotalMinutes);
            Console.WriteLine("秒数：" + timeSpan.TotalSeconds);
        }
    }
}