愛晴狂想曲

C# 時間函數 DateTime.Compare(datetime1, datetime2)用法 using System; class Program { static void Main() { DateTime date1 = new DateTime(2009, 8, 1, 0, 0, 0); // 8月1日午夜 DateTime date2 = new DateTime(2009, 8, 1, 12, 0, 0); // 同一天的中午 int result = DateTime.Compare(date1, date2); string relationship; if (result < 0) relationship = "is earlier than"; //date1 < date2 else if (result == 0) relationship = "is the same time as"; //date1 == date2 else relationship = "is later than"; //date1 > date2 Console.WriteLine("{0} {1} {2}", date1, relationship, date2); } }