C# DateTimeOffset.Add()用法及代码示例

此方法用于返回一个新的DateTimeOffset对象，该对象将一个指定的时间间隔添加到此实例的值。

用法： public DateTimeOffset Add (TimeSpan timeSpan);

Here, it takes a TimeSpan object that represents a positive or a negative time interval.

返回值：此方法返回一个对象，其值是当前DateTimeOffset对象表示的日期和时间与timeSpan表示的时间间隔之和。

异常：如果结果DateTimeOffset的值小于MinValue或结果DateTimeOffset的值大于MaxValue，则此方法将提供ArgumentOutOfRangeException。

以下示例程序旨在说明DateTimeOffset.Add(TimeSpan)方法的用法：

示例1:

// C# program to demonstrate the 
// DateTimeOffset.Add(TimeSpan) 
// Method 
using System; 
using System.Globalization; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // creating object of  DateTimeOffset 
            DateTimeOffset offset = new DateTimeOffset(2007,  
                    6, 1, 7, 55, 0, new TimeSpan(-5, 0, 0)); 
                                                         
  
            // creating object of TimeSpan 
            TimeSpan elapsedTime = new TimeSpan(10, 0, 0); 
  
            // adding a specified time interval  
            // to the value of this instance. 
            // using Add() method; 
            DateTimeOffset value = offset.Add(elapsedTime); 
  
            // Display the time 
            Console.WriteLine("DateTimeOffset is {0}", value); 
        } 
  
        catch (ArgumentOutOfRangeException e)  
        { 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

输出：

DateTimeOffset is 06/01/2007 17:55:00 -05:00

示例2:对于ArgumentOutOfRangeException

// C# program to demonstrate the 
// DateTimeOffset.Add(TimeSpan) 
// Method 
using System; 
using System.Globalization; 
  
class GFG { 
  
    // Main Method 
    public static void Main() 
    { 
        try { 
  
            // creating object of  DateTimeOffset 
            DateTimeOffset offset = DateTimeOffset.MaxValue; 
  
            // creating object of TimeSpan 
            TimeSpan elapsedTime = new TimeSpan(10, 0, 0); 
  
            // adding a specified time interval  
            // to the value of this instance. 
            // using Add() method; 
            DateTimeOffset value = offset.Add(elapsedTime); 
  
            // Display the time 
            Console.WriteLine("DateTimeOffset is {0}", value); 
        } 
  
        catch (ArgumentOutOfRangeException e) 
        { 
            Console.Write("Exception Thrown: "); 
            Console.Write("{0}", e.GetType(), e.Message); 
        } 
    } 
}

输出：

Exception Thrown: System.ArgumentOutOfRangeException

参考：

https://docs.microsoft.com/en-us/dotnet/api/system.datetimeoffset.add?view=netframework-4.7.2

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 DateTimeOffset.Add() Method in C#。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。