using System;

using System.Globalization;

​

public class Program

{

    public static void Main()

    {

        // 比較兩個時間差 ( 只比較到分鐘 )

        var timeA = new DateTime(2021, 5, 25, 12, 05, 10);

        var timeB = new DateTime(2021, 5, 25, 12, 05, 59);

        // TotalMinutes 用 Math.Floor 無條件捨去，就可以去掉因為秒數有的小數點

        var timeA_timeOfDayUntilMinutes = Math.Floor(timeA.TimeOfDay.TotalMinutes);

        var timeB_timeOfDayUntilMinutes = Math.Floor(timeB.TimeOfDay.TotalMinutes);

        Console.WriteLine(timeA.Date);              

        Console.WriteLine(timeB.Date);      

        Console.WriteLine(timeA_timeOfDayUntilMinutes);

        Console.WriteLine(timeB_timeOfDayUntilMinutes);

        // 別忘了比較到 Date !

        Console.WriteLine(timeA.Date == timeB.Date && timeA_timeOfDayUntilMinutes == timeB_timeOfDayUntilMinutes);

        Console.WriteLine(timeA.Date > timeB.Date || timeA_timeOfDayUntilMinutes > timeB_timeOfDayUntilMinutes);

​

    }

}