Create Datetime object with specific date format [closed] - c#

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How can I create instance of DateTime with specific date format ?
I would like to get DateTime with date format like: "yyyy-MM-dd".
Is is possible to get this instance like
var myDate = DateTime.Now.ToDateFormat("yyyy-MM-dd");
I must have DateTime object not a string.

DateTime is a class to store date and time information, it can be represented as string in very many ways (use .ToString(format) to specify the format required); if you want to change its default string reprsentation (i.e. default format, in order not to put ToString(format) everywhere within your code):
CultureInfo culture = new CultureInfo(Thread.CurrentThread.CurrentCulture.Name, true);
culture.DateTimeFormat.ShortDatePattern = "yyyy-MM-dd";
culture.DateTimeFormat.LongTimePattern = "HH:mm:ss";
Thread.CurrentThread.CurrentCulture = culture;
...
// 2016-05-25 14:26:46
// since "yyyy-MM-dd" + "HH:mm:ss" is a default format now
Console.Write(DateTime.Now);
so whenever DateTime should be represented as string (usually input/output operations) the format will be "yyyy-MM-dd HH:mm:ss"

I cant comment yet, so i have to do it this way.
See DateTime as an object with the properties "Month", "Day" and "Week". Until you print it, there is no date format.
Are you having issues between the javascript and C# date format (and/or model binding)?

Not exactly sure what the question is. I think Stephen provided an answer. DateTime does not have a format. But if not then I guess it's one of the following:
1) How to parse string into a DateTime?
// s is string containing date
DateTime s2d=DateTime.ParseExact(s, "yyyy-MM-dd", CultureInfo.InvariantCulture);
2) How to get date only component, with time 00:00:00.00000
DateTime dateOnly=myDate.Date;
DateTime dateOnlyNow=DateTime.Today; // For today's date.

Try this :
string fromFormat = "dd/MM/yyyy HH:mm:ss";
string toFormat = "yyyy-MM-dd HH:mm:ss";
string mydate = DateTime.Now.ToString();
DateTime newDate = DateTime.ParseExact(mydate, fromFormat, null);
String dat = newDate.ToString(toFormat);

DateTime objects can be created in different ways, e.g.:
DateTime myDate0 = DateTime.Now;
DateTime myDate1 = new DateTime(2016, 5, 25);
DateTime myDate2 = new DateTime(2016, 5, 25, 16, 45, 59, 985);
DateTime myDate3 = DateTime.ParseExact("2016-05-25", "yyyy-MM-dd", CultureInfo.InvariantCulture);
Date information is variable and can be changed in different ways, e.g.:
myDate0 = myDate0.Subtract(new TimeSpan(12, 0, 0));
myDate1 = myDate1.AddYears(15);
myDate2 = myDate2.Add(new TimeSpan(31, 7, 45, 59));
myDate3 = myDate3.AddDays(31);
myDate3 = myDate3.AddHours(7);
DateTime object can be represented as string in different ways, as written here by Dmitry Bychenko and Beldi Anouar too e.g.:
string string0 = myDate0.ToString("yyyy-MM-dd");
string string1 = myDate1.ToShortDateString();

Related

Is there a short-hand to initialize a DateTime variable? [closed]

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Is there a short-hand to initialize a DateTime variable in C#, without explicitly declaring a new object? For example, in VB.NET, you can surround a string value in hashes.
Dim date1 As Date = #5/1/2008 8:30:52AM#
No, there isn't a better or faster what than to actually create a DateTime object using the new operator.
You can use the DateTime.Parse or DateTime ParseExact methods (or the Try* versions of these) to create a DateTime object for you but this adds some unnecessary overhead such as for example allocating a string:
var d = DateTime.Parse("5/1/2008 8:30:52AM", CultureInfo.InvariantCulture);
By assigning the DateTime object a date and time value returned by a property or method.
The following example assigns the current date and time, the current Coordinated Universal Time (UTC) date and time, and the current date to three new DateTime variables.
DateTime date1 = DateTime.Now;
DateTime date2 = DateTime.UtcNow;
DateTime date3 = DateTime.Today;
Or if you need to parse a string to a DateTime, you could use this:
string iDate = "05/05/2005";
DateTime oDate = DateTime dt = DateTime.ParseExact(iDate, "M/d/yyyy", new CultureInfo("en-US"));
MessageBox.Show(oDate.Day + " " + oDate.Month + " " + oDate.Year );
I hope this is something you are looking for?

C#, DateTime conversion

Need help to convert datetime object into specific format. It may be duplicate question but i gone through many articles and question and answers provided in Stackoverflow but didn't get answer.
Current my date format is {dd/mm/yyyy 8:12:56 AM} which is default date time format. I want to convert in {mm/dd/yyyy 8:12:56 AM} format.
DateTime searchDateTime = Datetime.Now.AddYears(-1));
string test = searchDateTime.ToString("dd-MMM-yyyy");
Its giving me format which i have given in ToString.
DateTime date = Convert.ToDateTime(test);
But when i am trying to convert string to datetime format, its returning dd/mm/yyyy formatted date.
Try using DateTime.ParseExact if you want parse the string with known format and ToString when you want to represent DateTime into the desired format:
using System.Globalization;
...
DateTime searchDateTime = new DateTime(2019, 2, 25, 16, 15, 45);
// Escape delimiters with apostrophes '..' if you want to preserve them
string test = searchDateTime.ToString(
"dd'-'MMM'-'yyyy' 'h':'mm':'ss' 'tt",
CultureInfo.InvariantCulture);
// Parse string with known format into DateTime
DateTime date = DateTime.ParseExact(
test,
"dd'-'MMM'-'yyyy' 'h':'mm':'ss' 'tt",
CultureInfo.InvariantCulture);
// Presenting DateTime as a String with the desired format
string result = date.ToString(
"MM'/'dd'/'yyyy' 'h':'mm':'ss' 'tt",
CultureInfo.InvariantCulture);
Console.WriteLine($"Initial: {test}");
Console.Write($"Final: {result}");
Outcome:
Initial: 25-Feb-2019 4:15:45 PM
Final: 02/25/2019 4:15:45 PM

DateTime format conversion mm/dd/yyyy to yyyy/mm/dd

Can someone please let me know how do I convert this datetime format into yyyyMMdd
2/28/2017 12:02:04 AM
At the output I should get 20170228
Any advice on this?
If you already have the DateTime as an object
string formattedDate = date.ToString("yyyyMMdd");
If you need to parse the value first.
string dateValue = "2/28/2017 12:02:04 AM";
string format = "M/d/yyyy hh:mm:ss tt";
DateTime dateTime = DateTime.ParseExact(dateValue, format,
System.Globalization.CultureInfo.InvariantCulture);
For reference you can find a breakdown of the Custom Date and Time Format Strings
You need to specify the format of the date.
If you want it for the current time you can try like this :
string dtime = DateTime.Now.ToString("yyyy/MM/dd");
This is the solution I have come up with for you:
string format = "M/d/yyyy hh:mm:ss tt";
string dateString = "2/28/2017 12:02:04 AM";
CultureInfo provider = CultureInfo.InvariantCulture;
DateTime date = DateTime.ParseExact(dateString, format, provider);
string output = date.ToString("yyyyMMdd");
If you're using C# 6 or later (VS2015), you can format DateTime objects easily by using string interpolation using a custom format string. The custom format string that you're looking for is "yyyyMMdd".
// create your preferred date and time in a new DateTime struct
DateTime yourDateTime = new DateTime(2017, 2, 28, 0, 2, 4);
// format yourDateTime as a string
string yourFormattedDateTime = $"{yourDateTime:yyyyMMdd}";
You can read more about interpolated strings at https://msdn.microsoft.com/en-us/library/dn961160.aspx, and, as previously mentioned by #Adam Carr, you can find more information on custom date and time format strings at https://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx

Formatting datetime variable [closed]

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I am trying to convert and store a date in the form of String into datetime variable.
String fromdate= "02-JUN-2014";
DateTime dFromDate = Convert.ToDateTime(fromdate);
This dfromDate is used in another function which expects date to be in 02-JUN-2014 format.But since dfromDate storing the date as 06/02/2014, there is a format exception.
You can use ParseExact()
String fromdate="02-JUN-2014";
DateTime dFromDate = DateTime.ParseExact(fromdate, "dd-MMM-yyyy",CultureInfo.InvariantCulture)
Wrap fromDate in quotes:
var fromdate = "02-JUN-2014";
var dFromDate = Convert.ToDateTime(fromdate);
I am not to sure of the entire context but you could always use the folowing to create a new date:
DateTime thisDate1 = new DateTime(2011, 6, 10);
Console.WriteLine("Today is " + thisDate1.ToString("MMMM dd, yyyy") + ".");
// The example displays the following output:
// Today is June 10, 2011.
You want to use DateTime.ParseExact i.e.
DateTime dFromDate = DateTime.ParseExact(fromdate, "dd-MMM-yyyy", CultureInfo.InvariantCulture);
You may need to specific a culture for your language if you are not US (CultureInfo.InvariantCulture is a special form of US).
Convert.ToDateTime uses standard date and time format of your CurrentCulture and looks like dd-MMM-yyyy is not one of them.
You can use ParseExact method with english-based culture like InvariantCulture.
String fromdate = "02-JUN-2014";
DateTime dFromDate = DateTime.ParseExact(fromdate, "dd-MMM-yyyy",
CultureInfo.InvariantCulture);
Using DateTime.ParseExactmight work, and itis the best option if you know exactly the format string, but you could also set the current CultureInfo for the call:
String fromdate= "02-JUN-2014";
DateTime dFromDate = Convert.ToDateTime(fromdate, CultureInfo.CurrentCulture);
Or:
String fromdate= "02-JUN-2014";
DateTime dFromDate = Convert.ToDateTime(fromdate, new CultureInfo("es-ES"));
String fromdate= "02-JUN-2014";
DateTime dFromDate = DateTime.ParseExact(fromdate,"dd-MMM-yyyy",
CultureInfo.InvariantCulture);
Use ParseExact method.
Your first problem might be, that you need to assign a string like this:
String fromdate = "02-JUN-2014";

String not valid as a datetime string - Convert "yyyyMMdd" to datetime [closed]

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I have strings in format of "yyyyMMdd".
I would like to convert them into DateTime with the format but I get an error that says the string is not valid as a DateTime string.
How can I do this?
Use DateTime.ParseExact to specify the format and invariant culture:
var date = DateTime.ParseExact(date, "yyyyMMdd", CultureInfo.InvariantCulture);
Try DateTime.TryParseExact
DateTime dt;
DateTime.TryParseExact(textBox.Text, "yyyyMMdd", CultureInfo.InvariantCulture, DateTimeStyles.None, out dt);
Use DateTime.ParseExact:
string dateString = "20130701";
DateTime dt = DateTime.ParseExact(dateString, "yyyyMMdd", null, DateTimeStyles.None);
This question has been asked and answered before. But here is an example of working code:
string DateString = "20130701";
DateTime DT = DateTime.ParseExact(DateString, "yyyyMMdd", CultureInfo.InvariantCulture);
Where CultureInfo.InvariantCulture is a part of the System.Globalization namespace.
http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo(v=vs.71).aspx
Break them into a format which DateTime.Parse will accept as valid. You could even use a regular expression to parse out the information
Regex format = new Regex("(?<year>^[0-9]{4})(?<month>[0-9]{2})(?<day>[0-9]{2})");
Match m = format.Match(inputString);
int year = int.Parse(m.Groups["year"].Value;
int month = int.Parse(m.Groups["month"].Value;
int day = int.Parse(m.Groups["day"].Value;
DateTime date = new DateTime(year, month, day);

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