public static string GetUtcOffsetText(DateTime d)
{
TimeSpan utcOffset = d.GetUtcOffset();
return utcOffset.Hours.ToString("+00;-00", CultureInfo.InvariantCulture) + ":" + utcOffset.Minutes.ToString("00;00", CultureInfo.InvariantCulture);
}
public void SerializeShouldChangeNonUTCDates()
{
DateTime localDateTime = new DateTime(2008, 1, 1, 1, 1, 1, 0, DateTimeKind.Local);
DateTimeTestClass c = new DateTimeTestClass();
c.DateTimeField = localDateTime;
c.PreField = "Pre";
c.PostField = "Post";
string json = JsonConvert.SerializeObject(c, new IsoDateTimeConverter() { DateTimeStyles = DateTimeStyles.AssumeUniversal }); //note that this fails without the Utc converter...
c.DateTimeField = new DateTime(2008, 1, 1, 1, 1, 1, 0, DateTimeKind.Utc);
string json2 = JsonConvert.SerializeObject(c, new IsoDateTimeConverter() { DateTimeStyles = DateTimeStyles.AssumeUniversal });
TimeSpan offset = localDateTime.GetUtcOffset();
// if the current timezone is utc then local already equals utc
if (offset == TimeSpan.Zero)
Assert.AreEqual(json, json2);
else
Assert.AreNotEqual(json, json2);
}
internal static int WriteDateTimeString(char[] chars, int start, DateTime value, TimeSpan? offset, DateTimeKind kind, DateFormatHandling format)
{
int pos = start;
if (format == DateFormatHandling.MicrosoftDateFormat)
{
TimeSpan o = offset ?? value.GetUtcOffset();
long javaScriptTicks = ConvertDateTimeToJavaScriptTicks(value, o);
@"\/Date(".CopyTo(0, chars, pos, 7);
pos += 7;
string ticksText = javaScriptTicks.ToString(CultureInfo.InvariantCulture);
ticksText.CopyTo(0, chars, pos, ticksText.Length);
pos += ticksText.Length;
switch (kind)
{
case DateTimeKind.Unspecified:
if (value != DateTime.MaxValue && value != DateTime.MinValue)
{
pos = WriteDateTimeOffset(chars, pos, o, format);
}
break;
case DateTimeKind.Local:
pos = WriteDateTimeOffset(chars, pos, o, format);
break;
}
@")\/".CopyTo(0, chars, pos, 3);
pos += 3;
}
else
{
pos = WriteDefaultIsoDate(chars, pos, value);
switch (kind)
{
case DateTimeKind.Local:
pos = WriteDateTimeOffset(chars, pos, offset ?? value.GetUtcOffset(), format);
break;
case DateTimeKind.Utc:
chars[pos++] = 'Z';
break;
}
}
return pos;
}
private static long ToUniversalTicks(DateTime dateTime)
{
if (dateTime.Kind == DateTimeKind.Utc)
{
return dateTime.Ticks;
}
return ToUniversalTicks(dateTime, dateTime.GetUtcOffset());
}
public static int WriteDateTimeString(char[] chars, int start, DateTime value, TimeSpan? offset, DateTimeKind kind, DateFormatHandling format)
{
int num2;
if (format == DateFormatHandling.MicrosoftDateFormat)
{
TimeSpan offset2 = offset ?? value.GetUtcOffset();
long num = DateTimeUtils.ConvertDateTimeToJavaScriptTicks(value, offset2);
"\\/Date(".CopyTo(0, chars, start, 7);
num2 = start + 7;
string text = num.ToString(CultureInfo.InvariantCulture);
text.CopyTo(0, chars, num2, text.Length);
num2 += text.Length;
switch (kind)
{
case DateTimeKind.Unspecified:
if (value != DateTime.MaxValue && value != DateTime.MinValue)
{
num2 = DateTimeUtils.WriteDateTimeOffset(chars, num2, offset2, format);
}
break;
case DateTimeKind.Local:
num2 = DateTimeUtils.WriteDateTimeOffset(chars, num2, offset2, format);
break;
}
")\\/".CopyTo(0, chars, num2, 3);
num2 += 3;
}
else
{
num2 = DateTimeUtils.WriteDefaultIsoDate(chars, start, value);
switch (kind)
{
case DateTimeKind.Utc:
chars[num2++] = 'Z';
break;
case DateTimeKind.Local:
num2 = DateTimeUtils.WriteDateTimeOffset(chars, num2, offset ?? value.GetUtcOffset(), format);
break;
}
}
return num2;
}
public static long ToUniversalTicks(DateTime dateTime)
{
if (dateTime.Kind == DateTimeKind.Utc)
{
return dateTime.Ticks;
}
return DateTimeUtils.ToUniversalTicks(dateTime, dateTime.GetUtcOffset());
}