Is there a simple function for rounding a DateTime down to the nearest 30 minutes, in C#?

Question

For example:

2011-08-11 16:59 becomes 2011-08-11 16:30

Answer 1

There is no such function available

You can refer to : How can I round up the time to the nearest X minutes?

IF needed you can create one yourself

DateTime RoundUp(DateTime dt, TimeSpan d)
{
   return new DateTime(((dt.Ticks - d.Ticks + 1) / d.Ticks) * d.Ticks + d.Ticks);
}

eg:

var dt1 = RoundUp(DateTime.Parse("2011-08-11 16:59"), TimeSpan.FromMinutes(30));
// dt1 == {11/08/2011 16:30:00}