HOW DO I CALCULATE RELATIVE TIME?

Ashish Pandey

Total Post:128

Points:898
Posted by  Ashish Pandey
C# 
C#
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Hi Expert!

Given a specific DateTime value, how do I display relative time, like

2 hours ago
3 days ago
a month ago
etcetera?

Please help!
Thanks in advance.
  1. AVADHESH PATEL

    Post:604

    Points:4228
    Re: How do I calculate relative time?

    Hi Ashish!


    Try as following

    const int SECOND = 1;
    const int MINUTE = 60 * SECOND;
    const int HOUR = 60 * MINUTE;
    const int DAY = 24 * HOUR;
    const int MONTH = 30 * DAY;

    if (delta < 0)
    {
      return "not yet";
    }
    if (delta < 1 * MINUTE)
    {
      return ts.Seconds == 1 ? "one second ago" : ts.Seconds + " seconds ago";
    }
    if (delta < 2 * MINUTE)
    {
      return "a minute ago";
    }
    if (delta < 45 * MINUTE)
    {
      return ts.Minutes + " minutes ago";
    }
    if (delta < 90 * MINUTE)
    {
      return "an hour ago";
    }
    if (delta < 24 * HOUR)
    {
      return 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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