} // convertFromString()
private static NDate convertFromNumber(NNumber value)
{
NNumber numberValue = (NNumber)value;
long long_value = numberValue.asLong();
NNumber n = new NNumber(long_value);
String string_value = n.ToString();
// test if the number is actually a format of the type yyyyMMdd
if (string_value.Length == 8 && (string_value.StartsWith("1") || string_value.StartsWith("2")))
{
try
{
string format = "yyyyMMdd";
DateTimeFormatInfo dtfi = NDateUtils.createDateFormat(format);
return(new NDate(string_value, format, dtfi));
}
catch (Exception e)
{
// do nothing, proceed to next method of conversion
}
}
// test if the number is actually a format of the type yyMMdd
if (string_value.Length == 6)
{
try
{
string format = "yyMMdd";
DateTimeFormatInfo dtfi = NDateUtils.createDateFormat(format);
return(new NDate(string_value, format, dtfi));
}
#pragma warning disable 0168
catch (Exception e)
{
// do nothing, proceed to next method of conversion
}
#pragma warning restore 0168
}
if (long_value > 5000000)
{
// Java: this number is most probably amount of milliseconds since 1970
// C#: this number is most probably amount of milliseconds since 1900
NDate d = new NDate(DateTime.Now);
return(new NDate(long_value));
}
else
{
// Java: this number is most probably amount of milliseconds since 1970
// C#: this number is most probably amount of milliseconds since 1900
return(new NDate(long_value * 1000 * 60 * 60 * 24));
}
} // convertFromNumber()
private static NDate convertFromString(String value)
{
try
{
long long_value = long.Parse(value);
return(convertFromNumber(new NNumber(long_value)));
}
//catch (NumberFormatException e)
#pragma warning disable 0168
catch (FormatException e)
{
// do nothing, proceed to next method of conversion
}
#pragma warning restore 0168
// try with Date.toString() date format first
try
{
// https://msdn.microsoft.com/fr-fr/library/system.globalization.datetimeformatinfo.shortdatepattern(v=vs.110).aspx
// https://mdsaputra.wordpress.com/2012/02/01/c-convert-datetime-to-formated-string-formated-string-to-datetime-with-datetimeformatinfo/
// DateFormatSymbols dateFormatSymbols = DateFormatSymbols.getInstance(Locale.US);
CultureInfo ci = new CultureInfo("en-US");
DateTimeFormatInfo dtfi = ci.DateTimeFormat;
dtfi.LongTimePattern = "EEE MMM dd HH:mm:ss zzz yyyy";
//SimpleDateFormat dateFormat = new SimpleDateFormat("EEE MMM dd HH:mm:ss zzz yyyy", dtfi);
//return dateFormat.parse(value);
return(new NDate(DateTime.ParseExact(value, "T", dtfi)));
}
catch (NParseException e)
{
// do noting
}
foreach (String prototype_pattern in prototypePatterns)
{
if (prototype_pattern.Length == value.Length)
{
DateTimeFormatInfo dtfi;
try
{
dtfi = NDateUtils.createDateFormat(prototype_pattern);
return(new NDate(value, prototype_pattern, dtfi)); // dateFormat.parse(value);
}
catch (Exception e)
{
// proceed to next formatter
}
if (prototype_pattern.IndexOf('-') != -1)
{
// try with '.' in stead of '-'
try
{
dtfi = NDateUtils.createDateFormat(prototype_pattern.Replace("\\-", "\\."));
return(new NDate(value, prototype_pattern, dtfi)); //dateFormat.parse(value);
}
catch (Exception e)
{
// proceed to next formatter
}
// try with '/' in stead of '-'
try
{
dtfi = NDateUtils.createDateFormat(prototype_pattern.Replace("\\-", "\\/"));
return(new NDate(value, prototype_pattern, dtfi)); // dateFormat.parse(value);
}
catch (Exception e)
{
// proceed to next formatter
}
}
}
}
return(null);
} // convertFromString()
