Date as simple text (e.g. Today, Yesterday, 1 Week Ago) in .Net

Question

Does anyone have a simple function at hand for converting a date to a simple date-relative string in .NET?

E.g. 14-Oct-09 would read "Today", 13-Oct-09 would read "Yesterday" and 7-Oct-09 would read "1 Week Ago" etc.

Answer 1

You would indeed have to roll your own method of doing this, like JustLoren said.

This is an extension method I've been using. It is GateKiller script made into an extension method. So full credit to him. You could easily change it to however you want it.

public static string ToTimeSinceString(this DateTime value)
{
    const int SECOND = 1;
    const int MINUTE = 60 * SECOND;
    const int HOUR = 60 * MINUTE;
    const int DAY = 24 * HOUR;
    const int MONTH = 30 * DAY;

    TimeSpan ts = new TimeSpan(DateTime.Now.Ticks - value.Ticks);
    double seconds = ts.TotalSeconds;

    // Less than one minute
    if (seconds < 1 * MINUTE)
        return ts.Seconds == 1 ? "one second ago" : ts.Seconds + " seconds ago";

    if (seconds < 60 * MINUTE)
        return ts.Minutes + " minutes ago";

    if (seconds < 120 * MINUTE)
        return "an hour ago";

    if (seconds < 24 * HOUR)
        return ts.Hours + " hours ago";

    if (seconds < 48 * HOUR)
        return "yesterday";

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

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

    int years = Convert.ToInt32(Math.Floor((double)ts.Days / 365));
    return years <= 1 ? "one year ago" : years + " years ago";
}