C#中的DateTime.AddYears()方法
C#中的DateTime.AddYears()方法用于将指定的年数添加到此实例的值中。它返回新的DateTime。
语法
以下是语法-
public DateTime AddYears (int yrs);
上面的年份是要添加的年份。如果要减去年份，请使用负值。
示例
现在让我们看一个实现DateTime.AddYears()方法的示例-
using System;
public class Demo {
public static void Main(){
DateTime d1 = new DateTime(2019, 11, 20, 6, 20, 40);
DateTime d2 = d1.AddYears(5);
Console.WriteLine("Initial DateTime = {0:dd} {0:y}, {0:hh}:{0:mm}:{0:ss} ", d1);
Console.WriteLine("New DateTime (added years) = {0:dd} {0:y}, {0:hh}:{0:mm}:{0:ss} ", d2);
}
}输出结果
这将产生以下输出-
Initial DateTime = 20 November 2019, 06:20:40 New DateTime = 20 November 2024, 06:20:40
示例
现在让我们来看另一个实现DateTime.AddYears()方法的示例-
using System;
public class Demo {
public static void Main(){
DateTime d1 = new DateTime(2019, 11, 20, 6, 20, 40);
DateTime d2 = d1.AddYears(-2);
Console.WriteLine("Initial DateTime = {0:dd} {0:y}, {0:hh}:{0:mm}:{0:ss} ", d1);
Console.WriteLine("New DateTime (subtracting years) = {0:dd} {0:y}, {0:hh}:{0:mm}:{0:ss} ", d2);
}
}输出结果
这将产生以下输出-
Initial DateTime = 20 November 2019, 06:20:40 New DateTime (subtracting years) = 20 November 2017, 06:20:40