c#中的DateTime.Compare

public static int Compare(DateTime t1, DateTime t2)

DateTime date1 = new DateTime(2022, 1, 1);
DateTime date2 = new DateTime(2023, 1, 1);

int result = DateTime.Compare(date1, date2);

if (result < 0)
{
    Console.WriteLine("date1 is earlier than date2");
}
else if (result == 0)
{
    Console.WriteLine("date1 and date2 are equal");
}
else
{
    Console.WriteLine("date1 is later than date2");
}