Determine the difference between two DateTimes, only counting opening hours

Question

For our support software in C#, I need to determine the time span between two DateTimes, but I only want opening hours counted (i.e. weekdays from 09:00 to 17:00).

S

Answer 1

try this

namespace ConsoleApplication1
{
class Program
{
    static void Main(string[] args)
    {
        var date1 = new DateTime(2010, 10, 12, 12, 00, 00);
        var date2 = new DateTime(2010, 10, 14, 15, 00, 00);

        var hr1 = ((date1.Hour > 9) && (date1.Hour < 17)) ? 17 - date1.Hour : 0;
        var hr2 = ((date2.Hour > 9) && (date2.Hour < 17)) ? 17 - date2.Hour : 0;

        var middleHours = ((date2.Date -  date1.Date).Days -1) * 8 ;

        Console.WriteLine(hr1+hr2+ middleHours);
        Console.ReadKey();

    }
}

}

I have try it, and it is working :)