如何添加两个日期? [英] How to add two dates?

问题描述

在我的应用程序中，我在<appSettings>标记下的web.config文件中提到了一个自定义日期时间，如下所示.

In my application, I have mentioned a custom datetime in my web.config file under <appSettings> tag as shown below.

<appSettings>
<add key="DateTime" value="01/01/0001 01:01:01"/>
</appSettings>

所以那个时间我想在后面的代码中添加当前日期时间.

谁能说怎么做?

谢谢

So that time I want to add with current datetime in code behind.

Can any one say how to do this?

Thanks

推荐答案

添加两个日期后您会得到什么?
3月3日+下星期二等于多少?我不知道，我也不认为你知道.因为很傻.就像在光年中添加橘子一样！

考虑一下:您实际上要实现什么?

What do you expect to get when you add two dates?
What is 3rd March + next Tuesday equal to? I don''t know, and I don''t think you do. Because it is silly. It is like adding oranges to lightyears!

Think about it: what are you actually trying to achieve?

您使用^ ]和 TimeSpan [

You use DateTime[^] and TimeSpan[^] structs

But you cannot add a DateTime to another DateTime. You can add a TimeSpan to a DateTime.

DateTime now = DateTime.Now;
DateTime arrive = now + new TimeSpan(2, 30, 0); // Add 2 hours and 30 min.

将add key="DateTime"更改为TimeSpan.

Change add key="DateTime" to TimeSpan.

按照此处 [^ ] .
然后使用DateTime.Add方法将此值添加到另一个日期.

Read this date as described here[^].
Then add this value to another date using the DateTime.Add method.

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