c# - 当时间落在时间范围之间时返回真值？

Question

我正在制作一个函数来检查时间是否落在 24 小时格式的时间范围内，但是我的代码有些问题，任何人都可以指出如何解决吗？

我的代码:

bool isDoTime(int starthour, int startminute, int endhour, int endminute)
    {
        TimeSpan start = new TimeSpan(starthour, startminute, 0); 
        TimeSpan end = new TimeSpan(endhour, endminute, 0);
        TimeSpan add24h = new TimeSpan(24, 0, 0);
        TimeSpan now = DateTime.Now.TimeOfDay;


        if (starthour > endhour || (endhour == starthour && endminute <= startminute))
        {
            end += add24h;
        }
        if ((now > start) && (now < end))
        {
            return true;
        }

        return false;
    }

问题:我想在当前时间 20:30 - 3:30 之间返回 true，但是当我按如下方式运行我的代码时。条件是仅从 8:30 到 00:00 返回真，从 00:00 - 3:30 不返回真

if (isDoTime(20,30,3,30) //return true from 20:30  - 3:30 
{
   //dosomething
}

Answer 1

如果跨越午夜，则在一张支票中拆分，同一天则拆分为一张支票。

TimeSpan start = new TimeSpan(starthour, startminute, 0); 
TimeSpan end = new TimeSpan(endhour, endminute, 0);
TimeSpan now = DateTime.Now.TimeOfDay;

//The readable version:
if(start>end){
  //Must check if after start (before midnight) or before end (after midnight)
  if((now > start) || (now < end)){
    return true;
  {
}
else
{
  //Simple check - span is within same day
  if ((now > start) && (now < end))
  {
    return true;
  }
}
return false;

简短/神秘的版本:

return start > end ? (now > start) || (now < end) : (now > start) && (now < end);