Calculating time in ASP.NET [duplicate]

Question

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Closed 14 years ago.

Possible Duplicate:
How do I calculate relative time?

While posting something on SO it shows posted 5 mins ago or 1hr ago. How do I calculate the time and display it the same way?

• Mal: @Daniel - I need the logic to try. I am not asking for code am just asking for hint to get started.
• Peter: this could get you going: stackoverflow.com/questions/842057/…
• Icarus: You can take 2 DateTime instances and subtract them like this: TimeSpan result = firstDateTimeInstance - secondDateTimeInstance

Answer 1

For example C# Pretty Date Formatting:

 static string GetPrettyDate(DateTime d)
 {
 // 1.
 // Get time span elapsed since the date.
 TimeSpan s = DateTime.Now.Subtract(d);
 // 2.
 // Get total number of days elapsed.
 int dayDiff = (int)s.TotalDays;
 // 3.
 // Get total number of seconds elapsed.
 int secDiff = (int)s.TotalSeconds;
 // 4.
 // Don't allow out of range values.
 if (dayDiff < 0 || dayDiff >= 31)
 {
 return null;
 }
 // 5.
 // Handle same-day times.
 if (dayDiff == 0)
 {
 // A.
 // Less than one minute ago.
 if (secDiff < 60)
 {
 return "just now";
 }
 // B.
 // Less than 2 minutes ago.
 if (secDiff < 120)
 {
 return "1 minute ago";
 }
 // C.
 // Less than one hour ago.
 if (secDiff < 3600)
 {
 return string.Format("{0} minutes ago",
 Math.Floor((double)secDiff / 60));
 }
 // D.
 // Less than 2 hours ago.
 if (secDiff < 7200)
 {
 return "1 hour ago";
 }
 // E.
 // Less than one day ago.
 if (secDiff < 86400)
 {
 return string.Format("{0} hours ago",
 Math.Floor((double)secDiff / 3600));
 }
 }
 // 6.
 // Handle previous days.
 if (dayDiff == 1)
 {
 return "yesterday";
 }
 if (dayDiff < 7)
 {
 return string.Format("{0} days ago",
 dayDiff);
 }
 if (dayDiff < 31)
 {
 return string.Format("{0} weeks ago",
 Math.Ceiling((double)dayDiff / 7));
 }
 return null;
 }

(And you can also use a jquery plugin named Prettydate.)