C#中的DateTime.CompareTo()方法

2024-05-11 03:43:05 365

语法

以下是语法-

public int CompareTo (DateTime val);

上面的Val是要比较的日期。

它返回一个整数值，

<0-如果此实例早于Val

0-如果此实例与Val相同

>0-如果此实例晚于Val

示例

现在让我们看一个实现DateTime.CompareTo()方法的示例-

using System;
public class Demo {
   public static void Main(){
      DateTime date1 = new DateTime(2019, 05, 20, 6, 20, 40);
      DateTime date2 = new DateTime(2019, 05, 20, 6, 20, 40);
      Console.WriteLine("DateTime 1 = {0:dd} {0:y}, {0:hh}:{0:mm}:{0:ss} ", date1);
      Console.WriteLine("DateTime 2 = {0:dd} {0:y}, {0:hh}:{0:mm}:{0:ss} ", date2);
      int res = date1.CompareTo(date2);
      //返回0
      Console.WriteLine(res);
   }
}

输出结果

这将产生以下输出-

DateTime 1 = 20 November 2019, 06:20:40
DateTime 2 = 20 November 2019, 06:20:40
0

示例

现在让我们来看另一个实现DateTime.CompareTo()方法的示例-

using System;
public class Demo {
   public static void Main(){
      DateTime date1 = new DateTime(2019, 08, 20, 6, 20, 40);
      DateTime date2 = new DateTime(2019, 05, 20, 6, 20, 40);
      Console.WriteLine("DateTime 1 = {0:dd} {0:y}, {0:hh}:{0:mm}:{0:ss} ", date1);
      Console.WriteLine("DateTime 2 = {0:dd} {0:y}, {0:hh}:{0:mm}:{0:ss} ", date2);
      int res = date1.CompareTo(date2);
      // returns >0 since date1 is later than date2
      Console.WriteLine(res);
   }
}

输出结果

这将产生以下输出-

DateTime 1 = 20 August 2019, 06:20:40
DateTime 2 = 20 May 2019, 06:20:40
1

C#中的DateTime.CompareTo()方法

语法

示例

示例

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