Roundoff Timespan to 15 min interval

c#

Solution

I think you want something like this:

public static class TimeSpanExtensions
{
    public static TimeSpan RoundToNearestMinutes(this TimeSpan input, int minutes)
    {
        var totalMinutes = (int)(input + new TimeSpan(0, minutes/2, 0)).TotalMinutes;

        return new TimeSpan(0, totalMinutes - totalMinutes % minutes, 0);
    }
}

If you pass in 15 as your chosen interval for rounding, the function will first add 7 mins, then round down to the nearest 15 mins. This should give you what you want.

Because the above is written an extension method, you can use it like this:

var span1 = new TimeSpan(0, 10, 37, 00).RoundToNearestMinutes(15);
var span2 = new TimeSpan(0, 10, 38, 00).RoundToNearestMinutes(15);

The first one becomes 10:30, and the second one becomes 10:45 (as desired).

Problem

Original source

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