/// <summary>
/// Convert a <see cref="DateTime"/> object to a relative date (e.g.,
/// Today, tomorrow, yesterday) string format.
/// </summary>
/// <param name="value">The <see cref="DateTime"/> object to convert.</param>
/// <param name="options">
/// One of the <see cref="RelativeDateFormatting"/> values.
/// </param>
/// <returns>A relative date/time formatted string.</returns>
public static string ToRelativeDateString(this DateTime value, RelativeDateFormatting options)
{
var days = (value.Date - DateTime.Now.Date).Days;
return(days switch
{
0 => String.Format(CultureInfo.CurrentCulture, Strings.RelativeDateFormatStringToday, value),
1 => Strings.RelativeDateFormatStringTomorrow,
-1 => Strings.RelativeDateFormatStringYesterday,
_ when days >= 2 && days <= 5 && options == RelativeDateFormatting.DayNames => value.ToString("dddd", CultureInfo.CurrentCulture),
_ when days >= 2 && days <= 5 => String.Format(CultureInfo.CurrentCulture, Strings.RelativeDateFormatStringDaysFromNow, days),
_ when days <= -2 && days >= -5 && options == RelativeDateFormatting.DayNames => value.ToString("dddd", CultureInfo.CurrentCulture),
_ when days <= -2 && days >= -5 => String.Format(CultureInfo.CurrentCulture, Strings.RelativeDateFormatStringDaysAgo, Math.Abs(days)),
_ => String.Format(CultureInfo.CurrentCulture, Strings.RelativeDateFormatStringDefault, value)
});
/// <summary>
/// Convert a <see cref="DateTime"/> object to a relative date
/// (e.g., Today, tomorrow, yesterday) string format.
/// </summary>
/// <param name="value">The <see cref="DateTime"/> object to convert.</param>
/// <param name="options">One of the <see cref="RelativeDateFormatting"/> values.</param>
/// <returns>A relative date/time formatted string.</returns>
public static string ToRelativeDateString(this DateTime value, RelativeDateFormatting options)
{
var diff = value.Date - DateTime.Now.Date;
var days = diff.Days;
string format;
switch (days)
{
case 0:
format = String.Format(CultureInfo.CurrentCulture, Strings.RelativeDateFormatStringToday, value);
break;
case 1:
format = Strings.RelativeDateFormatStringTomorrow;
break;
case -1:
format = Strings.RelativeDateFormatStringYesterday;
break;
case 2:
case 3:
case 4:
case 5:
format = options == RelativeDateFormatting.DayNames ? value.ToString("dddd", CultureInfo.CurrentCulture) : String.Format(CultureInfo.CurrentCulture, Strings.RelativeDateFormatStringDaysFromNow, days);
break;
case -2:
case -3:
case -4:
case -5:
format = options == RelativeDateFormatting.DayNames ? value.ToString("dddd", CultureInfo.CurrentCulture) : String.Format(CultureInfo.CurrentCulture, Strings.RelativeDateFormatStringDaysAgo, Math.Abs(days));
break;
default:
format = String.Format(CultureInfo.CurrentCulture, Strings.RelativeDateFormatStringDefault, value);
break;
}
return(format);
}
/// <summary>
/// Convert a <see cref="DateTime"/> object to a relative date
/// (e.g., Today, tomorrow, yesterday) string format.
/// </summary>
/// <param name="value">The <see cref="DateTime"/> object to convert.</param>
/// <param name="options">One of the <see cref="RelativeDateFormatting"/> values.</param>
/// <returns>A relative date/time formatted string.</returns>
public static string ToRelativeDateString(this DateTime value, RelativeDateFormatting options)
{
var diff = value.Date - DateTime.Now.Date;
var days = diff.Days;
string format;
switch (days)
{
case 0:
format = String.Format(CultureInfo.CurrentCulture, Resources.RelativeDateFormatStringToday, value);
break;
case 1:
format = Resources.RelativeDateFormatStringTomorrow;
break;
case -1:
format = Resources.RelativeDateFormatStringYesterday;
break;
case 2:
case 3:
case 4:
case 5:
format = options == RelativeDateFormatting.DayNames ? value.ToString("dddd", CultureInfo.CurrentCulture) : String.Format(CultureInfo.CurrentCulture, Resources.RelativeDateFormatStringDaysFromNow, days);
break;
case -2:
case -3:
case -4:
case -5:
format = options == RelativeDateFormatting.DayNames ? value.ToString("dddd", CultureInfo.CurrentCulture) : String.Format(CultureInfo.CurrentCulture, Resources.RelativeDateFormatStringDaysAgo, Math.Abs(days));
break;
default:
format = String.Format(CultureInfo.CurrentCulture, Resources.RelativeDateFormatStringDefault, value);
break;
}
return format;
}
