Inspired by moment.js

DateTimeExtensions.cs

using System;

namespace System.Web
{

    public static class DateTimeExtensions {
        #region Momentjs
        /// <summary>
        /// 
        /// </summary>
        /// <param name="date"></param>
        /// <returns>Pretty formatted date like: </returns>
        public static string FromNow(this DateTime date)
        {
            // 1.
            // Get time span elapsed since the date.
            TimeSpan timeElapsed = DateTime.Now.Subtract(date);

            // 2.
            // Get total number of days elapsed.
            int dayDifference = (int)timeElapsed.TotalDays;

            // 3.
            // Get total number of seconds elapsed.
            int secDifference = (int)timeElapsed.TotalSeconds;

            // 4.
            // Upcomming
            if (dayDifference < 0)
            {
                if (dayDifference == -1)
                {
                    // A.
                    // Greater than one minute.
                    if (secDifference > 60)
                    {
                        return "in less than 60 seconds";
                    }
                    // B.
                    // Greater than 2 minutes.
                    if (secDifference > 120)
                    {
                        return "in 1 minute";
                    }
                    // C.
                    // Greater than one hour.
                    if (secDifference > 3600)
                    {
                        return string.Format("{0} minutes ago",
                            Math.Floor((double)secDifference / 60));
                    }
                    // D.
                    // Greater than 2 hours.
                    if (secDifference > 7200)
                    {
                        return "in 1 hour";
                    }
                    // E.
                    // Greater than one day.
                    if (secDifference > 86400)
                    {
                        return string.Format("{0} hours ago",
                            Math.Floor((double)secDifference / 3600));
                    }
                }
            } else{
                // 5.
                // Handle same-day times.
                if (dayDifference == 0)
                {
                    // A.
                    // Less than one minute ago.
                    if (secDifference < 60)
                    {
                        return "just now";
                    }
                    // B.
                    // Less than 2 minutes ago.
                    if (secDifference < 120)
                    {
                        return "1 minute ago";
                    }
                    // C.
                    // Less than one hour ago.
                    if (secDifference < 3600)
                    {
                        return string.Format("{0} minutes ago",
                            Math.Floor((double)secDifference / 60));
                    }
                    // D.
                    // Less than 2 hours ago.
                    if (secDifference < 7200)
                    {
                        return "1 hour ago";
                    }
                    // E.
                    // Less than one day ago.
                    if (secDifference < 86400)
                    {
                        return string.Format("{0} hours ago",
                            Math.Floor((double)secDifference / 3600));
                    }
                }
                // 6.
                // Handle previous days.
                else if (dayDifference == 1)
                {
                    return "yesterday";
                } else if (dayDifference < 7)
                {
                    return string.Format("{0} days ago",
                        dayDifference);
                }
                if (dayDifference < 91)
                {
                    return string.Format("{0} week ago",
                        Math.Ceiling((double)dayDifference / 7));
                }
            }
        }
        #endregion
    }
}