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

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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);

Related

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";

Create Datetime object with specific date format [closed]

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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();

How to find number of days from two string type dates? [closed]

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I have two text box dates (8/11/2014) and (9/11/2014). I want to find the number of days between these two dates. I am getting some string error message. Please help me..
Just parse both dates and then substract them and count total days like this:
DateTime date1 = DateTime.ParseExact(dateString1, "d/M/yyyy", CultureInfo.InvariantCulture);
DateTime date2 = DateTime.ParseExact(dateString2, "d/M/yyyy", CultureInfo.InvariantCulture);
var days = (int)(date2-date1).TotalDays;
I feel taking risk to answer this but..
You can use DateTime.ParseExact or DateTime.TryParseExact methods to parse your strings and subtract each other and use TimeSpan.TotalDays property. You can use TimeSpan.Days property as well if you are interested in the total days as an int rather than a double.
string txtdate = "8/11/2014";
DateTime dt;
if(DateTime.TryParseExact(txtdate, "d/MM/yyyy",
CultureInfo.InvariantCulture,
DateTimeStyles.None, out dt))
{
}
string txtdate1 = "9/11/2014";
DateTime dt1;
if(DateTime.TryParseExact(txtdate1, "d/MM/yyyy",
CultureInfo.InvariantCulture,
DateTimeStyles.None, out dt1))
{
}
var totaldays = (dt1 - dt).Days; // 1
You said;
I need output as 8/11/2014-9/11/2014=1. But I applied your code it
shows output like 1.0?
I told you TotalDays property returns double and Days property returns int. But besides that, you seems like a result as 9/11/2014 - 8/11/2014 = 1 instead of just 1. In such a case, you can use string.Format like;
var result = string.Format("{0} - {1} = {2}",
dt1.ToString("d/MM/yyyy", CultureInfo.InvariantCulture),
dt.ToString("d/MM/yyyy", CultureInfo.InvariantCulture),
totaldays);
result will be 9/11/2014 - 8/11/2014 = 1

DateTime does not parse from string [closed]

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Closed 8 years ago.
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I'm trying to parse a string to a DateTime using DateTime.TryParseExact()
The issue is it returns false.
class Program
{
static void Main(string[] args)
{
var date = "30/01/2014 10:02:43:096";
DateTime dt;
if (DateTime.TryParseExact(date, "MM/dd/yyyy HH:mm:ss:fff", CultureInfo.InvariantCulture, DateTimeStyles.None, out dt))
Console.WriteLine("Yipee");
else
Console.WriteLine("D'oh!");
Console.ReadKey();
}
}
If I update the date the program to use a different string date var date = "03/01/2014 10:02:43:096"; then it works
I can't work out why it doesn't like 30 as the month...
Problem : in your date string 30/01/2014 10:02:43:096 Date 30 comes first but you are parsing it as Month suing MM/dd/yyyy HH:mm:ss:fff
Solution : You need to use dd/MM/yyyy instead of MM/dd/yyyy as your datestring is 30/01/2014 10:02:43:096 where date comes first.
Try This:
if (DateTime.TryParseExact(date, "dd/MM/yyyy HH:mm:ss:fff",
CultureInfo.InvariantCulture, DateTimeStyles.None, out dt))
date "30/01/2014 10:02:43:096"
format "MM/dd/yyyy HH:mm:ss:fff"
You are trying to get a Month of 30. :|
try
if (DateTime.TryParseExact(date, "dd/MM/yyyy HH:mm:ss:fff",
CultureInfo.InvariantCulture, DateTimeStyles.None, out dt))

Convert a string (format: yyyyymmddhhmmss) to datetime [duplicate]

This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
How to convert string with unusual format into datetime
How can I convert a string to DateTime in c#? example:
string s = "20070406000000";
How can I convert that string into a DateTime?
Use the ParseExact or TryParseExact method:
DateTime t = DateTime.ParseExact("20070406000000", "yyyyMMddHHmmss", CultureInfo.InvariantCulture);
This CodeProject article explains how to do this.
String MyString = "1999-09-01 21:34 PM";
DateTime MyDateTime = DateTime.ParseExact(MyString, "yyyy-MM-dd HH:mm tt", CultureInfo.InvariantCulture);
Use DateTime.ParseExact()
CultureInfo provider = CultureInfo.InvariantCulture;
var date = DateTime.ParseExact(theDateString, "yyyyMMddHHmmss", provider);
You will need to use the DateTime.ParseExact function to tell it what the format of the string is so it knows how to convert it.
string strDate = "20070406000000";
string strDateTimeFormat = "yyyyMMddHHmmss";
DateTime objDate = DateTime.ParseExact(strDate, strDateTimeFormat, DateTimeFormatInfo.InvariantInfo);

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