Change DateTime To A Friendly Name

Here is a simple extension method to convert a DateTime type to a friendly name like "Today" or "Yesterday," as you see in some file browsers.

public static string ToFriendlyDateString(this DateTime input)
{
    var formattedDate = string.Empty;
    if (input.Date == DateTime.Today)
    {
        formattedDate = nameof(DateTime.Today);
    }
    else
    {
        formattedDate = input.Date == DateTime.Today.AddDays(-1) ? "Yesterday" :
                        input.Date > DateTime.Today.AddDays(-6) ?
                        input.ToString("dddd").ToString() :
                        input.ToString(CultureInfo.CurrentCulture.DateTimeFormat.LongDatePattern,
                                       CultureInfo.CurrentCulture);
    }
    formattedDate += " @ " + input.ToString(CultureInfo.CurrentCulture.DateTimeFormat.LongTimePattern,
                                            CultureInfo.CurrentCulture).ToLower();
    return formattedDate;
}

You can find this code and lots more in my dotNetTips.Utility open source project.