I've got the following String format: "26/10/2017 22:54:22"
im trying to convert it to DateTime object, which should be of the same format as the string (24hours format) but somewhy it generates a 12h format.
my code:
var time = "26/10/2017 22:54:22";
DateTime convertedDate = DateTime.ParseExact(time, "dd/MM/yyyy HH:mm:ss", CultureInfo.InvariantCulture);
Console.WriteLine(convertedDate);
Console.ReadLine();
the output i get is: 10/26/2017 10:54:22 PM
any ideas why is that?
DateTime by itself doesn't make any difference if the time is 12-hour or 24-hour, it's only when converted to a string that there is a difference.
Console.WriteLine will call the ToString() method (the one without any parameters) of the object passed as parameter. For a DateTime, ToString() formats the date and time according to the current locale. Yours is probably set to a 12-hour format.
If you need to print your time with a different format, you should format the DateTime explicitely, using another variant of the ToString method.
In your case:
Console.WriteLine(convertedDate.ToString("MM/dd/yyyy HH:mm:ss"));
If you have successfully parsed into a DateTime structure, there is overloaded method of ToString for DateTime, which is converts the value of the current DateTime object to its equivalent string representation using the specified format and the formatting conventions of the current culture.
So in your case you can just use:
Console.WriteLine(convertedDate.ToString("MM/dd/yyyy HH:mm:ss"));
MSDN Link: DateTime.ToString Method (String)
Related
I have gone through many questions and answers here regarding Datetime format conversion. Almost all are related to converting the format to output as a String.
Now I want to convert a DateTime variable in local format (dd/MM/yyy) to a DateTime variable in dd-MM-yyyy format for providing it as an input parameter for an API method.
I have tried several method like mentioning InvariantCulture while parsing and all. Even tried using Hebrew calendar for setting current culture also. Everything is returning the DateTime in local format(dd/MM/yyyy) itself and when providing that datetime variable to API is returning error message as to provide datetime in dd-MM-yyyy format only.
Is there any way to convert a datetime variable to a specific format?
Edit:
Is there is any way to convert datetime to a specific format? I am attaching some screen-shots below for reference.
I am using a third-party API, and I don't want to disclose the methods.
Method structure
Error response from the API method
Now I hope there is now way for specifying a format for DateTime variable.
First of all - DateTime has no some formats. string that represents DateTime can have formats.
To convert DateTime to specific format to string you can use ToString()
method:
DateTime dt = DateTime.Now;
string date = dt.ToString("dd-MM-yyyy");
To parse string to DateTime you can use ParseExact() method:
string date = "02/03/2017";
DateTime dt = DateTime.ParseExact(date, "dd/MM/yyyy", CultureInfo.InvariantCulture);
or
string date = "02-03-2017";
DateTime dt = DateTime.ParseExact(date, "dd-MM-yyyy", CultureInfo.InvariantCulture);
FOR YOUR EDIT:
Convert.ToDateTime() without CultureInfo tries to convert string to DateTime using your PC culture. If you want to use Convert.ToDateTime() use overloaded method that accept string and culture:
DateTime dt = Convert.ToDateTime(someDate, CultureInfo.InvariantCulture);
I use ToString Method and give pattren for parameter.
for example :
DateTime.Now.ToString("dd-MM-yyyy")
I'm trying to parse 09/01/2015 00:00:00 to the format yyyy-MM-ddThh:mm:ssZ using following method:
DateTime.ParseExact("09/01/2015 00:00:00", "yyyy-MM-ddThh:mm:ssZ", (IFormatProvider)CultureInfo.InvariantCulture);
But I'm getting String was not recognized as a valid DateTime
Can anyone tell me why? I believe 09/01/2015 00:00:00 is a valid DateTime format?
From DateTime.ParseExact
Converts the specified string representation of a date and time to its
DateTime equivalent. The format of the string representation must
match a specified format exactly or an exception is thrown.
In your case, they are not.
I assume your 09 part is day numbers, you can use dd/MM/yyyy HH:mm:ss format instead.
var dt = DateTime.ParseExact("09/01/2015 00:00:00",
"dd/MM/yyyy HH:mm:ss",
CultureInfo.InvariantCulture);
Since CultureInfo already implements IFormatProvider, you don't need to explicitly cast it.
I don't understand this. So it means I first have to correct my string
and secondly I can do a ParseExact(). I thought ParseExact could
handle the given string...
ParseExact is not a magical method that can parse any formatted string you suplied. It can handle only if your string and format perfectly matches based on culture settings you used.
Try this code:
var text = "09/01/2015 00:00:00";
var format = "dd/MM/yyyy HH:mm:ss";
var dt = DateTime.ParseExact(text, format, (IFormatProvider)CultureInfo.InvariantCulture);
You'll notice that the format must structurally match the text you're trying to parse exactly - hence the ParseExact name for the method.
The format does not match, you need to change 09/01/2015 into 2015-01-09 or theyyyy-MM-dd part into dd/MM/yyyy.
The ParseExact-method is no ultimate method that converts ANY dateformat into another one, it is simply to parse a given string into a datetime using the provided format. Thus if your inout does not match this format the method will throw that exception.
As a datetime is internally only a number there is no need to convert one format into another at all, so as long as you know your input-format you can build a date from it which has nothing to do with any formatting which you may need when you want to print that date to your output. In this case you WILL need a formatter.
As most people have stated the error is coming from the fact that the date in string format doesn't match the format you are saying it's in. You are saying that 09/01/2015 00:00:00 is in the format "yyyy-MM-ddThh:mm:ssZ", which it's not, hence the error. To rectify this you need to either alter the format the string is in, or more likely, change the format you are saying the date is in. So change "yyyy-MM-ddThh:mm:ssZ" to "dd/MM/yyyy HH:mm:ss".
In a more long term view how are you arriving at that date? Is it possible that the format may change (input but the user)? If so it might be better to try and avoid the error being thrown and handle it better with TryParseExact. To make use of this best I generally output a nullable DateTime and then check if it's null. If you don't do this then if the parse fails it will simply make the output datetime the minimum value.
Something like this should work:
public DateTime? StringToDate (string dateString, string dateFormat)
{
DateTime? dt;
DateTime.TryParseExact(dateString, dateFormat, null, System.Globalization.DateTimeStyles.None, out dt);
return dt;
}
Then you can use it like this:
DateTime? MyDateTime = StringToDate("09/01/2015 00:00:00", "dd/MM/yyyy HH:mm:ss");
if(MyDateTime != null)
{
//do something
}
Another simple way to do this...
var dt = Convert.ToDateTime(Convert.ToDateTime("09/01/2015 00:00:00").ToString("yyyy-MM-ddThh:mm:ssZ"))
I'm trying to convert a date time to a specific format using a CultureInfo object and ToString
for example:
var dateTime = someDate.ToString(cultureInfoObject);
The problem is that dateTime is a string after this executes but I still need it to be a DateTime object. If I try to convert it back to a DateTime I get an exception because it is in a different format (specifically en-AU in this case). Is there another way to do this?
CultureInfo cultureInfo = new CultureInfo("en-au");
var dateTime = DateTime.Now.ToString(cultureInfo);
DateTime dt = DateTime.Parse(dateTime, cultureInfo);
To convert back from string to DateTime, use the DateTime.parse method
For example (assuming dateTime is your string):
DateTime dteParsed = DateTime.Parse(dateTime, cultureInfoObject);
Note, this is a static method Optionally you can add a third parameter, Which is a DateTimeStyles Enumeration, which permits you to "guide" the parser for which format the date's text is presented see (https://msdn.microsoft.com/en-us/library/91hfhz89%28v=vs.110%29.aspx)
I have a excel sheet in which am taking a date column in this format "23/8/11 01:33:01:PM"
and am inserting it in sql 2008 using datarow but am getting a error
String was not recognised as valid datetime.
Can any one please help?
DateTime newdate = Convert.ToDateTime(row[8].ToString());
Here how Convert.ToDateTime method looks like when you decompile it;
public static DateTime ToDateTime(string value)
{
if (value == null)
return new DateTime(0L);
else
return DateTime.Parse(value, (IFormatProvider) CultureInfo.CurrentCulture);
}
As you can see, this method use DateTime.Parse method with your CurrentCulture. And if your string doesn't match your current culture date format, your code will be broken. That's the reason you get this error.
Use DateTime.ParseExact with "dd/M/yy hh:mm:ss:tt" format instead.
Converts the specified string representation of a date and time to its
DateTime equivalent. The format of the string representation must
match a specified format exactly or an exception is thrown.
string s = "23/8/11 01:33:01:PM";
DateTime newdate = DateTime.ParseExact(s, "dd/M/yy hh:mm:ss:tt", CultureInfo.InvariantCulture);
Console.WriteLine(newdate);
Output will be;
8/23/2011 1:33:01 PM
Here a DEMO.
For your case;
DateTime newdate = DateTime.ParseExact(row[8].ToString(), "dd/M/yy hh:mm:ss:tt", CultureInfo.InvariantCulture);
For more informations, take a look;
Custom Date and Time Format Strings
Convert.ToDateTime internally calls DateTime.Parse which by default will use the current culture of your application. If 23/8/11 01:33:01:PM is not a valid format for this culture then this method will fail.
For specific date formats it's best to use DateTime.ParseExact e.g.
DateTime.ParseExact("23/8/11 01:33:01:PM", "dd/M/yy hh:mm:ss:tt", CultureInfo.InvariantCulture);
This approach makes your code culture independent which means the date will always be parsed correctly (given it's in the specified format).
This will work:
DateTime newdate = Convert.ToDateTime("8/23/11 01:33:01 PM");
I changed day and month and removed the colon a the end. But that is very specific. You need to know more about the dates passed to do that.
I have a date string in format "08/1999" I want to get the first date of the corresponding month. eg : in this case 08/01/1999.
It is simple for en-Us culture. I break the string, append "01" in the string to get 08/01/1999 and then DateTime.Parse(datestring) but this is valid for en-US culture only.
How can I do this for different culture ?
My datestring will always be in mm/yyyy format. and I am trying to obtain a DataTime obj from this dateString.
Use ParseExact method. Note upper-cased M's are for months and lower-cased m's for minutes.
string dateToConvert = "08/1999";
string format = "MM/yyyy";
CultureInfo provider = CultureInfo.InvariantCulture;
DateTime result = DateTime.ParseExact(dateToConvert, format, provider);
Output:
{1999-08-01 00:00:00}
You can also use Convert.ToDateTime and Parse methods. It will produce the same result, but in implicite way:
DateTime result = Convert.ToDateTime(dateToConvert, provider); // Output: {1999-08-01 00:00:00}
DateTime result = DateTime.Parse(dateToConvert, provider); // Output: {1999-08-01 00:00:00}
Read more at:
Parsing Date and Time Strings
Standard Date and Time Format Strings
Custom Date and Time Format Strings
I'm not sure if I understand your question correctly, but you can try passing CultureInfo.InvariantCulture if you want to force the US date format regardless of the regional settings of the client computer:
DateTime.Parse("08/1999", System.Globalization.CultureInfo.InvariantCulture)
I break the string, append "01" in the string to get 08/01/1999 and then DateTime.Parse(datestring)
That's a very long-winded way to do it. Simply this will work:
DateTime.Parse("08/1999")
How can I do this for different culture ?
If your string is always in this format, do this:
DateTime.Parse("08/1999", CultureInfo.InvariantCulture)