Adding Days to a Date but Excluding Weekends

Question

Given a date how can I add a number of days to it, but exclude weekends. For example, given 11/12/2008 (Wednesday) and adding five will result in 11/19/2008 (Wednesday) rath

Answer 1

I would use this extension, remember since it is an extension method to put it in a static class.

Usage:

var dateTime = DateTime.Now.AddBusinessDays(5);

Code:

namespace ExtensionMethods
{
    public static class MyExtensionMethods
    {
        public static DateTime AddBusinessDays(this DateTime current, int days)
        {
            var sign = Math.Sign(days);
            var unsignedDays = Math.Abs(days);
            for (var i = 0; i < unsignedDays; i++)
            {
                do
                {
                    current = current.AddDays(sign);
                } while (current.DayOfWeek == DayOfWeek.Saturday ||
                         current.DayOfWeek == DayOfWeek.Sunday);
            }
            return current;
        }
    }
}

Source:

https://github.com/FluentDateTime/FluentDateTime/blob/master/src/FluentDateTime/DateTime/DateTimeExtensions.cs