/// <summary>
/// Parses the input date time offset string of the specified format.
/// </summary>
public static DateTimeOffset ParseDateTimeOffset(
string dateTime, StandardDateTimeFormat format)
{
return(DateTimeOffset.ParseExact(
dateTime,
GetFormat_(format),
CultureInfo.InvariantCulture));
}
/// <summary>
/// Returns a string representation of the input date time of the specified
/// format.
/// </summary>
public static string ToString(this DateTime dateTime, StandardDateTimeFormat format)
{
if (format == StandardDateTimeFormat.RFC1123 && dateTime.Kind != DateTimeKind.Utc)
{
dateTime = dateTime.ToUniversalTime();
}
return(dateTime.ToString(GetFormat_(format), CultureInfo.InvariantCulture));
}
/// <summary>
/// Returns a string representation of the input date time offset of the specified
/// format.
/// </summary>
public static string ToString(this DateTimeOffset dateTime, StandardDateTimeFormat format)
{
if (format == StandardDateTimeFormat.RFC1123 && dateTime.Offset != TimeSpan.Zero)
{
dateTime = dateTime.ToUniversalTime();
}
return(dateTime.ToString(GetFormat_(format), CultureInfo.InvariantCulture));
}
/// <summary>
/// Parses the input date time string of the specified format.
/// </summary>
public static DateTime ParseDateTime(
string dateTime,
StandardDateTimeFormat format,
DateTimeKind kind = DateTimeKind.Unspecified)
{
var parsed = DateTime.ParseExact(
dateTime,
GetFormat_(format),
CultureInfo.InvariantCulture,
DateTimeStyles.RoundtripKind);
if (parsed.Kind == DateTimeKind.Unspecified)
{
parsed = DateTime.SpecifyKind(parsed, kind);
}
return(parsed);
}
private static string GetFormat_(StandardDateTimeFormat format)
{
if (format == StandardDateTimeFormat.RFC1123)
{
return(RFC1123Format_);
}
if (format == StandardDateTimeFormat.RFC3339)
{
return(RFC3339Format_);
}
if (format == StandardDateTimeFormat.ISO8601)
{
return(ISO8601_Short_Format_);
}
throw new NotImplementedException("Unknown format: {0}".Fmt(format));
}
