Format Past Date As Relative - CSharp System

CSharp examples for System:DateTime Format

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Description

Format Past Date As Relative

Demo Code


using System;//  w w w. ja v a2 s.  c o m

public class Main{
        public static string FormatPastDateAsRelative(DateTime givenDate)
        {
            var ts = new TimeSpan(DateTime.UtcNow.Ticks - givenDate.Ticks);

            if (ts.Ticks < 0)
            {
                return "not yet";
            }

            double delta = Math.Abs(ts.TotalSeconds);

            if (delta < 1 * MINUTE)
            {
                return ts.Seconds == 1 ? "one second ago" : ts.Seconds + " seconds ago";
            }

            if (delta < 45 * MINUTE)
            {
                return ts.Minutes == 1 ? "a minute ago" : ts.Minutes + " minutes ago";
            }

            if (delta < 24 * HOUR)
            {
                return ts.Hours <= 1 ? "an hour ago" : ts.Hours + " hours ago";
            }

            if (delta < 48 * HOUR)
            {
                return "yesterday";
            }

            if (delta < 30 * DAY)
            {
                return ts.Days + " days ago";
            }

            if (delta < 12 * MONTH)
            {
                int months = Convert.ToInt32(Math.Floor((double)ts.Days / 30));
                return months <= 1 ? "one month ago" : months + " months ago";
            }
            else
            {
                int years = Convert.ToInt32(Math.Floor((double)ts.Days / 365));
                return years <= 1 ? "one year ago" : years + " years ago";
            }
        }
}

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