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In C#, given a DateTime object, how do I get a ISO 8601 date in string format?
I've a variable with type DateTime in my C# code.
How do I convert this to "Z" format?
Thanks.
Do you mean converting to a string time/date like 2009-06-15 20:45:30Z? If so then try:
mydate.ToUniversalTime().ToString("u");
See http://msdn.microsoft.com/en-us/library/az4se3k1.aspx for info on Standard Date and Time format strings. In particular read the entry on using the "Universal Sortable ("u") Format Specifier" whcih explains why I have the ToUniversalTime call in there.
If you mean the universal sortable date/time pattern:
string formatted = theDate.ToString("u");
Example result:
2009-06-15 20:45:30Z
Based on a quick search it seems to me that you simply mean UTC time, in which case you can use the ToUniversalTime method of DateTime, and when displaying as a string append "Z" to the end, or use the Universal Format Specifier when calling ToString, or you could construct it using a number of format specifiers in the correct order.
I guess your format is ISO 8601: DateTime.UtcNow.ToString("yyyy-MM-ddTHH:mm:ssZ")
Maybe a duplicate of this topic: Given a DateTime object, how do I get an ISO 8601 date in string format?
Related
This question already has answers here:
Converting a String to DateTime
(17 answers)
Closed 3 years ago.
I want to convert string datetime to Datetime using C#. I am going to store datetime in sql database
The string in your example has an offset component so you can use DateTimeOffset:
var dateTimeOffset = DateTimeOffset.Parse("2012-08-16T19:20:30.456+08:00", CultureInfo.InvariantCulture);
From the linked docs:
The DateTimeOffset structure includes a DateTime value, together with
an Offset property that defines the difference between the current
DateTimeOffset instance's date and time and Coordinated Universal Time
(UTC).
just
DateTime date= DateTime.Parse(dateString);
Use DateTime.Parse("2012-08-16T19:20:30.456+08:00")
Use can use C# Interactive Windows to test it.
//string value of date
var iDate = "2012-08-16T19:20:30.456+08:00";
//Convert.ToDateTime(String)
//This method will converts the specified string representation of a date and time to an equivalent date and time value
var dateConversion1 = Convert.ToDateTime(iDate);
//DateTime.Parse()
//DateTime.Parse method supports many formats. It is very forgiving in terms of syntax and will parse dates in many different formats. That means, this method can parse only strings consisting exactly of a date/time presentation, it cannot look for date/time among text.
var dateConversion2 = DateTime.Parse(iDate);
//DateTime.ParseExact()
//ParseExact method will allow you to specify the exact format of your date string to use for parsing. It is good to use this if your string is always in the same format. The format of the string representation must match the specified format exactly.
var dateConversion3 = DateTime.ParseExact(iDate, "yyyy-MM-dd HH:mm tt", null);
//CultureInfo
//The CultureInfo.InvariantCulture property is neither a neutral nor a specific culture. It is a third type of culture that is culture-insensitive. It is associated with the English language but not with a country or region.
var dateConversion4 = DateTime.ParseExact(iDate, "yyyy-MM-dd HH:mm tt", System.Globalization.CultureInfo.InvariantCulture);
//DateTime.TryParse method
//DateTime.TryParse converts the specified string representation of a date and time to its DateTime equivalent using the specified culture - specific format information and formatting style, and returns a value that indicates whether the conversion succeeded.
DateTime dateConversion5;
DateTime.TryParse(iDate, out dateConversion5);
These are few C# methods which can be used as a conversion string to DATETIME, make sure string is a valid string so that it allows you to convert.
I am writing an application in C#. I have a DateTime object which I need to output in a format specified by customer input. The problem is that the format string that the user provides is not in c# jargon, the user is entering the strftime format (i.e.:%Y %m %d) , so I need to convert that to c# format. In this particular example the c# format for "%Y %m %d" will be "yyyy MM dd" .So before I write my own parser, isn't there already any function that will help map these two formats?
strftime datetime formats vs c# date time formats
I have seen this question asked before, but people did not understand what the question was (Convert Date Formatting Codes to date), so fingers cross!
Many thanks
This question already has answers here:
Date vs DateTime
(14 answers)
Closed 6 years ago.
In my simple program, I need the user to input a date of format dd-mm-yyyy. Then I need to store that date in a text file.
To get the date from the user I use
DateTime l_Date = DateTime.ParseExact(Console.ReadLine(), "d-M-yyyy", new CultureInfo("en-CA"));
However, it always gets formatted as 2017-07-08 12:00:00 AMin my text file and I have also tried it in debug and the above line of code does return the date + time. I want only the date.
Thanks in advance for any help!
Use the ToShortDateString method:
https://msdn.microsoft.com/en-us/library/system.datetime.toshortdatestring(v=vs.110).aspx
If you wanna 'Date' part only. You can use ToShortDateString as #wablab said.
Also you can use ToLongDataString method.
Or use ToString with your format, for example: ToString("dd-MM-yyyy").
For more information, follow this link: MSDN Standard Date and Time Format Strings
This question already has answers here:
Converting a String to DateTime
(17 answers)
Closed 7 years ago.
I receive DateTime in this format => yyyyMMddHHmmss e.g. 20160214204032
Due to its somewhat unique format, I can't just use Convert.ToDateTime -- I tried, it didn't work.
It's easy enough to create a helper method that would parse the components of this date e.g
var year = myString.Substring(0,4);
but I'm concerned that this may have poor performance.
Can anyone think of a better way to convert a string in this format to DateTime?
You cannot set format in Convert.ToDateTime. So, use ParseExact instead.
DateTime.ParseExact("20160214204032", "yyyyMMddHHmmss",
System.Globalization.CultureInfo.InvariantCulture)
Due to its somewhat unique format, I can't just use Convert.ToDateTime -- I tried, it didn't work.
It fails because Convert.ToDateTime tries to convert from your system Date Time Format and throws exception if it can't.
using String Functions is also bad to convert to DateTime so you can do
DateTime dt = DateTime.ParseExact("20160214204032",
"yyyyMMddHHmmss",
System.Globalization.CultureInfo.InvariantCulture)
This question already has answers here:
Parse string to DateTime in C#
(9 answers)
Closed 7 years ago.
I am trying to read date from excel using code
String ss = (String)w.Cells[2 + i, 4].Value2;
dRow[3] = DateTime.Parse(ss);
Code works when ss = "12/11/2015" but gives error
String was not recognized as a valid DateTime
when ss = "13/11/2015"
It gives error because month can not be 12 but it is taking date as month. This is what I think. Same code is working on other PC. Do I need to check my date time format or anything like date setting.
DateTime.Parse uses standard date and time format of your CurrentCulture settings by default.
Looks like your CurrentCulture has MM/dd/yyyy format as a short date format and since there is no month as 13 in Gregorian Calendar (which probably uses as a Calendar for your CurrentCulture), you get FormatExcetion.
You can use DateTime.ParseExact method to specify your format exactly like;
dRow[3] = DateTime.ParseExact("13/11/2015", "dd/MM/yyyy",
CultureInfo.InvariantCulture);
If you get this as an input and you want to parse it to DateTime, you have to know which format it has. Other than that, it can generate ambiguous scenarios.
For example; what 01/02/2015 should be parsed as? 1st February or 2nd January?
You shouldn't assume that every string you supplied perfectly parsed with DateTime.Parse method. It is not that smart.