2/22/2012 3:30:00
Surely that is an acceptable format to be converted to DateTime using Convert.ToDateTime()?
I would personally avoid using Convert.ToDateTime. I generally prefer1 to use DateTime.TryParseExact, specifying the culture and format string you expect - assuming you have an expected format, of course. If you don't, you have to ask yourself bigger questions.
For example:
DateTime value;
if (DateTime.TryParseExact(text, "M/d/yyyy H:mm:ss",
CultureInfo.InvariantCulture,
DateTimeStyles.None,
out value))
{
Console.WriteLine("Parsed to {0}", value);
}
else
{
Console.WriteLine("Failed to parse");
}
That's a slightly odd format to start with - normally a 24-hour format would include a leading 0 for the hour, and a 12-hour format would include an am/pm designator.
1 Well, I prefer to use Noda Time, but that's a different matter...
Surely that is an acceptable format to be converted to DateTime using Convert.ToDateTime()?
Surely not. That would be true for some locales but for example I have a fr-FR locale and this is an invalid date. There are no 22 months in the year. Make sure you specify the format when parsing the date. You could use the TryParseExact method for this.
If you got the Information about Year, Month, etc. separately as Integers I would rather use the Constructor of DateTime.
DateTime myDateTime = new DateTime(year, month, day, hour, minute, second);
Usually nothing can go wrong with this...
It should be able to if you supply an IFormatProvider which specifies the culture (e.g. en-US in that case).
var date = Convert.ToDateTime("2/22/2012 3:30:00", CultureInfo.GetCultureInfo("en-US"));
Here is an example on how to use Convert.ToDateTime() which will help you to understand it :
Convert.ToDateTime example
Or You can try by following this example :
Convert String to DateTime
This works just fine for me:
DateTime dt = Convert.ToDateTime("2/22/2012 3:30:00");
Console.WriteLine(dt.ToShortDateString());
Console.WriteLine(dt.ToShortTimeString());
Of course I am not paying attention to localization like Darin suggests
Related
i am fetching datetime value through xml like:
string time = "20150605020247+0000"
I want to convert into datetime value. I tried with DateTime.Parse, ParseExact, Convert.ToDateTime. It's not working, it's returning the error:
string was not recognised as valid datetime
You should use DateTime.ParseExact like this
DateTime theTime = DateTime.ParseExact(time, "ddMMyyyyHHmmss+ffff,CultureInfo.InvariantCulture);
You should be able to use DateTime.ParseExact, since you know the exact format of the string. If we assume it's year, month, day, hour, minute, second, and offset, then you can do something like:
var result = DateTime.ParseExact("20150605020247+0000", "yyyyMMddHHmmsszzz",
CultureInfo.InvariantCulture);
You need to use exact format specifier in your ParseExact method.
DateTime.ParseExact("20150605020247+0000", "yyyyMMddHHmmsszzz", System.Globalization.CultureInfo.InvariantCulture);
Fiddle: https://dotnetfiddle.net/cQJ9hN
EDIT:
Please check the standard DateTime formats used in .NET world: https://learn.microsoft.com/en-us/dotnet/standard/base-types/standard-date-and-time-format-strings plus check the source of your data how exactly are the string dates produced.
However most likely the '+####' part of your string is the local date UTC offset, not the fractions part of the time (as other answers suggest). So parsing the date by using the "yyyyMMddhhmmssffff" would produce wrong results.
I have the following date in string format "2017-04-05 05:00:00 a.m" . Now I am trying to convert that to datetime format with the following code:
var dateTime="2017-04-05 05:00:00 a.m";
DateTime value = DateTime.MinValue;
DateTime.TryParse(dateTime, out value );
But I am alwayws getting dt as {1/1/0001 12:00:00 AM} , Can you please tell me why ? and how can I convert that string to date.
You could try creating a custom DateTimeFormatInfo with your custom am/pm designators:
var formatInfo = (DateTimeFormatInfo) CultureInfo.InvariantCulture.DateTimeFormat.Clone();
formatInfo.AMDesignator = "a.m";
formatInfo.PMDesignator = "p.m";
var value = DateTime.Parse("2017-04-05 05:00:00 a.m", formatInfo);
This also works for afternoon times:
var value = DateTime.Parse("2017-04-05 03:00:00 p.m", formatInfo);
The DateTime string you have is not parsed and you are getting the default value. One of the reason is the a.m in your date string. It also depends on Current thread Culture settings as well. You can use TryParseExact to give the format you have in DateTime string also with CulureInfo.
DateTime.TryParseExact(dateTime, "yyyy-MM-dd hh:mm:ss 'a.m'", CultureInfo.InvariantCulture,DateTimeStyles.None, out value);
Note you have a.m instead of am which has to be escaped like I did with 'a.m' in above example.
You can have p.m as well and above wont work for that. You can replace dot with empty string to make a.m to am and p.m to pm to use Custom Date and Time Format Strings tt for am / pm. I assume there would be only one dot between am or pm.
string dateTime = "2017-04-05 05:00:00 a.m";
dateTime = dateTime.Replace(".", "");
DateTime value = DateTime.MinValue;
DateTime.TryParseExact(dateTime, "yyyy-MM-dd hh:mm:ss tt", CultureInfo.InvariantCulture,DateTimeStyles.None, out value);
Read more about impact of Thread.CurrentCulture
The CultureInfo object that is returned by this property, together
with its associated objects, determine the default format for dates,
times, numbers, currency values, the sorting order of text, casing
conventions, and string comparisons. See the CultureInfo class to
learn about culture names and identifiers, the differences between
invariant, neutral, and specific cultures, and the way culture
information affects threads and application domains. See the
CultureInfo.CurrentCulture property to learn how a thread's default
culture is determined, and how users set culture information for their
computers.
The . in a.m is causing the problem. Assuming that you have both a.m and p.m to deal with, try stripping the . characters before you try to parse the DateTime value.
var stringToParse = "2017-04-05 05:00:00 a.m";
DateTime parsedValue;
DateTime.TryParse(stringToParse.Replace(".", string.Empty), out parsedValue);
This will not work if a . character is used elsewhere in the string, for any other reason. Fractional seconds for example. If that is the case, you'd be better off using Joe's answer instead.
I am trying to parse the date by using below code
DateTime mydate = DateTime.ParseExact(datetoconvert,"dd/mm/yyyy",System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat);
but its output is wrong, the datetoconvert in above code is 30/Mar/2017 but output is 29/Jan/2017
looking forward for your valuable answers...
Lowercase mm means minute, use MM
DateTime mydate = DateTime.ParseExact(datetoconvert,"dd/MM/yyyy",System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat);
If you want to output it as 30/Mar/2017(different topic):
string result = mydate.ToString("dd/MMM/yyyy", CultureInfo.InvariantCulture);
But note that / has a special meaning too(in Parse and ToString). It will be replaced with your current cultures date-separator which seems to be / but fails with a different. You can avoid it by specifying CultureInfo.InvariantCulture or by masking it by wrapping it with apostrophes:
DateTime mydate = DateTime.ParseExact(datetoconvert,"dd'/'MM'/'yyyy",System.Globalization.CultureInfo.CurrentCulture.DateTimeFormat);
replace
"dd/mm/yyyy"
with
"dd/MMM/yyyy"
because "Jan" is matched by MMM instead of mm (for minutes)
Reference
"MMM" The abbreviated name of the month.
https://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx
The date format is wrong. try "dd/MM/yyyy" instead of "dd/mm/yyyy"
If you need abbrivated month name, use "dd/MMM/yyyy"
I am trying to convert the string to DateTime. But I can not convert.
DateTime dt = DateTime.Parse("16/11/2014", CultureInfo.InvariantCulture);
Console.WriteLine("Date==> " + dt);
The error is FormatException.
My input time format is "dd/MM/yyyy".
Please let me any idea to resolve my problem.
Given that you know your input format, you should specify it with `ParseExact:
DateTime dt = DateTime.ParseExact(text, "dd/MM/yyyy",
CultureInfo.InvariantCulture);
I would always recommend being as explicit as you can be about date/time formats. It makes your intention very clear, and avoids the possibility of getting months and days the wrong way round.
As Soner has stated, CultureInfo.InvariantCulture uses MM/dd/yyyy as its short date pattern, as you can validate with:
Console.WriteLine(CultureInfo.InvariantCulture.DateTimeFormat.ShortDatePattern)
As a mild plug, you might want to consider using my Noda Time project for your date/time handling - aside from anything else, that allows you to treat a date as a date, rather than as a date and time...
Because InvariantCulture doesn't have dd/MM/yyyy as a standard date and time format, but it has MM/dd/yyyy as a standard date and time format.
That's why it thinks your string is MM/dd/yyyy format, but since there is no 16 as a month in Gregorian calender, you get FormatException.
Instead of that, you can use DateTime.TryParseExact method to specify exact format like;
string s = "16/11/2014";
DateTime dt;
if(DateTime.TryParseExact(s, "dd/MM/yyyy", CultureInfo.InvariantCulture,
DateTimeStyles.None, out dt))
{
}
i have a string which contains date time this...
string S="08/18/2013 24:00:00"
DateTime DT = DateTime.ParseExact(S, "MM/dd/yyyy HH:mm:ss", null);
i want to parse it into date time but shows an exception like this.
The DateTime represented by the string is not supported in calendar System.Globalization.GregorianCalendar.
please tell me any solution for this problem.
The problem is with the hour being 24. DateTime doesn't support this, as far as I'm aware.
Options:
Use my Noda Time project which does support 24:00:00, but basically handles it by adding a day (it doesn't preserve a difference between that and "end of previous day")
Keep using DateTime, manually replace "24:00:00" with "00:00:00" when it occurs, and remember to add a day afterwards
If you want to preserve the information that it was actually "end of the day" you'd need to do that separately, and keep the information alongside the DateTime / LocalDateTime.
You should also parse with the invariant culture as other answers have suggested - you're not trying to parse a culture-specific string; you know the exact separators etc.
string S="08/18/2013 00:00:00"; // here is the first problem occurred
DateTime DT = DateTime.ParseExact(S, "MM/dd/yyyy hh:mm:ss", System.Globalization.CultureInfo.InvariantCulture);
From The "HH" Custom Format Specifier
The "HH" custom format specifier (plus any number of additional "H"
specifiers) represents the hour as a number from 00 through 23; that
is, the hour is represented by a zero-based 24-hour clock that counts
the hours since midnight.
So, using 24 as an hour is invalid on this case.
Try with hh format with 00 instead like;
string S = "08/18/2013 00:00:00";
DateTime DT = DateTime.ParseExact(S, "MM/dd/yyyy hh:mm:ss", CultureInfo.InvariantCulture);
Here a DEMO.
If you really want to use 24:00:00 as a hour, take a look Noda Time which developed by Jon.