Gets the pretty date. : Date Time Format « Date Time « C# / C Sharp

Gets the pretty date.


using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Xml;

class Main{
    /// <summary>
    /// Gets the pretty date.
    /// </summary>
    /// <param name="date">The date.</param>
    /// <returns>Returns a pretty date.</returns>
    public static string GetPrettyDate(string date)
      return GetPrettyDate(date, "dd MMMM yyyy");

    public static string GetPrettyDate(string date, string format)
      // 0. Convert the String into DateTime
      DateTime d;

      if (DateTime.TryParse(date, out d))
        return GetPrettyDate(d, format);

      return date;

    /// <summary>
    /// Gets the pretty date.
    /// </summary>
    /// <param name="date">The date.</param>
    /// <param name="format">The format.</param>
    /// <returns>Returns a pretty date.</returns>
    /// <remarks>
    /// </remarks>
    public static string GetPrettyDate(DateTime date, string format)
      // 1. Get time span elapsed since the date.
      TimeSpan s = DateTime.Now.Subtract(date);

      // 2. Get total number of days elapsed.
      Int32 dayDiff = (Int32)s.TotalDays;

      // 3. Get total number of seconds elapsed.
      Int32 secDiff = (Int32)s.TotalSeconds;

      // 4. Don't allow out of range values.
      if (dayDiff < 0 || dayDiff >= 31)
        return FormatDateTime(date, format); // d.ToString(format);

      // 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 FormatDateTime(date, format);


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37.DateTime Format: : hh:mm:ss.f
38.DateTime Format: hh:mm:ss.F
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40.DateTime Format: hh:mm:ss.FF (2)
41.DateTime Format: "hh:mm:ss.fff
42.DateTime Format: hh:mm:ss.FFF
43.DateTime Format: MM/dd/yyyy g
44.DateTime Format: h:m:s.F t
45.DateTime Format: hh:mm:ss.ff tt
46.DateTime Format: H:mm:ss
47.DateTime Format: HH:mm:ss
48.DateTime Format: %K
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50.DateTime Format: (M) MMM, MMMM
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52.DateTime Format: dddd dd MMMM (2)
53.DateTime Format: yyyyy
54.DateTime Format: %z
55.DateTime Format: zzz, zz
56.DateTime Format: %h
57.DateTime Format: h \\h m \\m
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