Datetime objects are comparable, so you can compare datetime objects using the < , > , <= , >= , and == comparison operators. Therefore, you can use the expression start <= current <= end to check if a current time falls into the interval [start, end] when assuming that start , end , and current are datetime objects.
For checking for a time of day use:
TimeSpan start = new TimeSpan(10, 0, 0); //10 o'clock
TimeSpan end = new TimeSpan(12, 0, 0); //12 o'clock
TimeSpan now = DateTime.Now.TimeOfDay;
if ((now > start) && (now < end))
{
//match found
}
For absolute times use:
DateTime start = new DateTime(2009, 12, 9, 10, 0, 0)); //10 o'clock
DateTime end = new DateTime(2009, 12, 10, 12, 0, 0)); //12 o'clock
DateTime now = DateTime.Now;
if ((now > start) && (now < end))
{
//match found
}
Some good answers here but none cover the case of your start time being in a different day than your end time. If you need to straddle the day boundary, then something like this may help:
TimeSpan start = TimeSpan.Parse("22:00"); // 10 PM
TimeSpan end = TimeSpan.Parse("02:00"); // 2 AM
TimeSpan now = DateTime.Now.TimeOfDay;
if (start <= end)
{
// start and stop times are in the same day
if (now >= start && now <= end)
{
// current time is between start and stop
}
}
else
{
// start and stop times are in different days
if (now >= start || now <= end)
{
// current time is between start and stop
}
}
Note that in this example the time boundaries are inclusive and that this still assumes less than a 24-hour difference between start
and stop
.
A simple little extension function for this:
public static bool IsBetween(this DateTime now, TimeSpan start, TimeSpan end)
{
var time = now.TimeOfDay;
// Scenario 1: If the start time and the end time are in the same day.
if (start <= end)
return time >= start && time <= end;
// Scenario 2: The start time and end time is on different days.
return time >= start || time <= end;
}
if (new TimeSpan(11,59,0) <= currentTime.TimeOfDay && new TimeSpan(13,01,0) >= currentTime.TimeOfDay)
{
//match found
}
if you really want to parse a string into a TimeSpan, then you can use:
TimeSpan start = TimeSpan.Parse("11:59");
TimeSpan end = TimeSpan.Parse("13:01");
Try using the TimeRange object in C# to complete your goal.
TimeRange timeRange = new TimeRange();
timeRange = TimeRange.Parse("13:00-14:00");
bool IsNowInTheRange = timeRange.IsIn(DateTime.Now.TimeOfDay);
Console.Write(IsNowInTheRange);
Here is where I got that example of using TimeRange
The TimeOfDay
property returns a TimeSpan
value.
Try the following code:
TimeSpan time = DateTime.Now.TimeOfDay;
if (time > new TimeSpan(11, 59, 00) //Hours, Minutes, Seconds
&& time < new TimeSpan(13, 01, 00)) {
//match found
}
Also, new DateTime()
is the same as DateTime.MinValue
and will always be equal to 1/1/0001 12:00:00 AM
. (Value types cannot have non-empty default values) You want to use DateTime.Now
.
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