未来的时间还剩几秒？

发布于 2024-12-02 15:50:43 字数 540 浏览 1 评论 0原文

我有以下代码：

var enteredDate = Convert.ToDateTime("17:45");
var todaysDateTime = DateTime.Now;
var span = enteredDate.Subtract(todaysDateTime);
double totalMins = Math.Ceiling(span.TotalMinutes);

string timeCond;
if (totalMins > 0)
{
   if (totalMins < 5)
   {
     timeCond = Math.Ceiling(span.TotalSeconds) + " seconds left.";
   }
   else
   {
     timeCond = totalMins + " minutes left.";
   }

}

鉴于现在的时间为 17:50，返回的秒数将是负数，我希望能够返回与代码相关的秒数或分钟数下一次的时间是17:45，这可能吗？

原文

I have the following Code:

var enteredDate = Convert.ToDateTime("17:45");
var todaysDateTime = DateTime.Now;
var span = enteredDate.Subtract(todaysDateTime);
double totalMins = Math.Ceiling(span.TotalMinutes);

string timeCond;
if (totalMins > 0)
{
   if (totalMins < 5)
   {
     timeCond = Math.Ceiling(span.TotalSeconds) + " seconds left.";
   }
   else
   {
     timeCond = totalMins + " minutes left.";
   }

}

Given that the time now would be 17:50 the returned second would be a negative figure, I would like to be able to return the seconds or minutes in relation to the code for the next time the time would be 17:45, is this possible?

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○闲身 2024-12-09 15:50:43

您总是可以添加一天：（

var span = enteredDate - todaysDateTime;
if (span < TimeSpan.Zero)
{
    span += TimeSpan.FromDays(1);
}

请注意，这假设今天的 17:45 和明天的 17:45 之间有 24 小时。在夏令时过渡期间情况并非如此；适应这一点是可行的，但会让生活变得更加轻松复杂的。）

You could always just add a day:

var span = enteredDate - todaysDateTime;
if (span < TimeSpan.Zero)
{
    span += TimeSpan.FromDays(1);
}

(Note that this assumes there are 24 hours between today's 17:45 and tomorrow's 17:45. That isn't true around daylight saving transitions; accommodating for that is feasible, but would make life somewhat more complicated.)

回复收藏 0 原文

云柯 2024-12-09 15:50:43

尝试

var span = Convert.ToDateTime("17:45") > DateTime.Now ? Convert.ToDateTime("17:45") - DateTime.Now : Convert.ToDateTime("17:45").AddDays(1) - DateTime.Now

try

var span = Convert.ToDateTime("17:45") > DateTime.Now ? Convert.ToDateTime("17:45") - DateTime.Now : Convert.ToDateTime("17:45").AddDays(1) - DateTime.Now

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