I'm trying to format a DateTime in a C# function, but I can't get it to work.
The format I'm trying to get is like this:
"28/02/2012"
I've tried different ways to format the DateTime, for example:
string formattedDate = DateTime.Today.ToString("dd/MM/yyyy");
string formattedDate = String.Format("{0:dd/MM/yyyy}", DateTime.Today);
Both these examples are giving me this result:
"28.02.2012"
I've formatted DateTimes many times before using the two ways shown above, but I can't really see why I'm getting "." instead of "/".
Is there some configuration that has to be set up or something?
phoog has given the correct reason, but I would suggest the wrong workaround. If you always want to format the date/time as if you were in a particular culture (probably the invariant culture) then you can do that:
string formattedDate = DateTime.Today.ToString("dd/MM/yyyy",
CultureInfo.InvariantCulture);
I find this cleaner than forcing some parts of the format into an invariant form, while leaving others (the numbers) up to the culture. For example, consider this:
using System;
using System.Globalization;
using System.Threading;
class Test
{
static void Main()
{
CultureInfo ci = new CultureInfo("ar-SA");
Thread.CurrentThread.CurrentCulture = ci;
string formattedDate = DateTime.Today.ToString("dd/MM/yyyy");
Console.WriteLine(formattedDate);
}
}
Today, that prints "06/04/1433" - which is appropriate for the Islamic calendar, but probably isn't what you expected.
The / character in a date-time format string is a placeholder for the culture-specific date separator. To specify the / character explicitly, you need to escape it: "dd\\/MM\\/yyyy" or #"dd\/MM\/yyyy"
For more information, see the MSDN page "Custom Date and Time Format Strings"
I did it like this:
string formattedDate = (String.Format("{0:dd.MM.yyyy}", DateTime.Today)).Replace(".", #"/");
Related
I have below code :-
1) String str = DateTime.Now.ToString("M/d/yyyy")
Output :
str gives "2/3/2014"
2) DateTime dt = Convert.ToDateTime(DateTime.Now.ToString("M/d/yyyy"));
Output :
dt.ToString() gives "2014/02/03 12:00:00 "
But I'm not able to understand why it is not giving "2014/2/3 12:00:00 " ,i.e, without leading zeroes in day and month?
DateTime values have no format, it is the DateTime.ToString() method that outputs your datetime value in a particular format.
If you don't specify any parameter in the ToString() then the output is formatted using the general date and time format specifier ('G'). (Usually is the one set up in you control panel international settings)
Console.WriteLine(dt.ToString("M/d/yyyy"));
The default format string for System.DateTime is "G" as in System.DateTime.ToString("G") where G is one of the presets. from source
Edit 1:
Globalization.CultureInfo customCulture = new Globalization.CultureInfo("en-US");
customCulture.DateTimeFormat.ShortDatePattern = "yyyy/M/d";
System.Threading.Thread.CurrentThread.CurrentCulture = customCulture;
System.Threading.Thread.CurrentThread.CurrentUICulture = customCulture;
DateTime dt = Convert.ToDateTime(DateTime.Now.ToString("M/d/yyyy"));
Console.WriteLine(dt.ToString())
When using ToString() without any format, it simply uses the default ToString() method.
Use the format you specified again to get the wanted result.
you can use the Format function for displaying the way you want
string.Format("{0:yyyy/M/d}",dateValue);
regards
I have a variable which is printed out using the following string format:
var printThis = String.Format("{0:d}, {0:T}", dateAndTimeVar);
Now I have a problem; I need '{0:T}' to display something like '--.--.--' when I have not set any time to the 'dateAndTimeVar'. This seems not supported using the regular DateTime type (showing '00.00.00' by default if there is no time set).
I can change the 'dateAndTimeVar' variable to anything (including other types), but the string formatting must remain the same.
Is there any solution to this?
You would need to create your own IFormatProvider and pass it into the String.Format method like this
String.Format(new MyFormatProvider(), "{0:d}, {0:T}", dateAndTimeVar);
The FormatProvider would then do a pass-through on all formats except T, where you would have your logic for outputting either the native T format for DateTime or --.--.-- if the Time-part of DateTime is 00:00:00.
Read about IFormatProvider on MSDN here
This a list of date time patterns you can use
DateTime.ToString() Patterns | GeekZilla
Cheers
You could simply check if the DateTime contains a time:
String printThis = dateAndTimeVar.Date == dateAndTimeVar ?
String.Format("{0:d}, --.--.--", dateAndTimeVar) :
String.Format("{0:d}, {0:T}", dateAndTimeVar);
You could simply do this:
var printThis = String.Format("{0:d}, {0:T}", dateAndTimeVar)
.Replace("00:00:00", "--.--.--");
I need to convert a String to DateTime format, for this I just tried like
DateTime.ParseExact(DateOfBirth,"MM/dd/yyyy",CultureInfo.InvariantCulture);
it's working fine when I pass the value like 05/30/2012.
But if I try to pass the value as 5/30/2012 its showing error:
String was not recognized as a valid DateTime
To fix this I tried like
DateTime.ParseExact(String.Format("{0:MM/dd/yyyy}", DateOfBirth), "MM/dd/yyyy",
CultureInfo.InvariantCulture);
it's still not working. Here If I try String.Format("{0:MM/dd/yyyy}", DateOfBirth) for the value 5/30/2012 its showing the same format instead of 05/30/2012.
How can I fix this, can anyone help me here...
check this link
string to DateTime conversion in C#
Use M/d/yyyy instead of the format specifier you're using. Using only a single M matches months with leading zeros as well. This is also true for d.
assuming your DateOfBirth string is always separated by slashes, you could try something like this:
string[] dateParts = DateOfBirth.Split('/');
DateTime.ParseExact(string.Format("{0:00}", dateParts[0]) + "/" + string.Format("{0:00}", dateParts[1]) + "/" + string.Format("{0:0000}", dateParts[2]));
I think the issue is the format string can't be recognized since DateOfBirth is not a DateTime object. Thus, you enforce formatting by reformatting the string yourself
There is an overload which might be of your interest
DateTime.ParseExact(DateOfBirth,
new[] { "MM/dd/yyyy", "M/dd/yyyy" },
CultureInfo.InvariantCulture,
DateTimeStyles.None);
This should help you take care of single as well as two digit month part (since 5 is failing for you as the format is MM)
Since you have separators in your string (ie /), you can just do;
DateTime.ParseExact(DateOfBirth,"M/d/yyyy",CultureInfo.InvariantCulture);
That will parse either single or double digit days/months. When you use MM/dd/yyyy, you're requiring them both to be double digit numbers, and that's obviously not what you want in this case.
Try just "d" instead of "MM/dd/yyyy".
So, the statement should be:
var date = DateTime.ParseExact(DateOfBirth, "d", CultureInfo.InvariantCulture);
The documentation for this is here:
http://msdn.microsoft.com/en-us/library/w2sa9yss.aspx
Edit
Oops, I misread the documentation. It should be "M/d/yyyy".
In case you need to make it culture-independent..
var dateTimeFormat = CultureInfo.CreateSpecificCulture(CultureInfo.CurrentUICulture.Name).DateTimeFormat;
dateTimeFormat.ShortDatePattern =
Regex.Replace(Regex.Replace(dateTimeFormat.ShortDatePattern, "[M]+", "MM"), "[d]+", "dd");
var newDate = date.HasValue ? date.Value.DateTime.ToString("d", dateTimeFormat) : null;
DateTime datuMDokumenta = Convert.ToDateTime(txtDatumDokum.Text);
txtDatumDokum.Text is like "09.09.2011".
but i get FormatException error. Must i parse date?
Try DateTime.ParseExact with the dd.MM.yyyy format string
DateTime.ParseExact(txtDatumDokum.Text, "yyyyMMdd", CultureInfo.InvariantCulture, DateTimeStyles.None);
It's not good to see, anyway try this:
string s = "09.09.2011";
DateTime dt = Convert.ToDateTime(
s.Replace(".",
new System.Globalization.DateTimeFormatInfo().DateSeparator));
You need to tell us why the text input is using this format. If it is because the user enters it this way, then you need to make sure that the format matches that given by Thread.CurrentCulture.DateTimeFormat.ShortDatePattern. Changing the culture (by setting
Thread.CurrentCulture) to an appropriate value will then solve your problem.
If you are supposed to parse the input no matter what format it is in, then you will need to do some manual processing first (perhaps remove spaces and other delimiter characters from the input with string.Replace) and then try to parse the date using DateTime.ParseExact and a known format string.
But it all depends on why the input has that format, and why your application's current culture does not match it.
You could try this, TryParse avoids parsing exceptions.. Then you just need check result to be sure that it parsed.
DateTime datuMDokumenta;
bool result = DateTime.TryParse(txtDatumDokum.Text, out datuMDokumenta);
You will have to determine if this is a good solution for your application.
See this example:
http://msdn.microsoft.com/en-us/library/ch92fbc1.aspx
Judging by the date you gave you need to include a culture, de-DE accepts 01.01.11 type of dates but I'm not sure which one you actually want to use, you'll need to decide that.. the Code would look like this:
using System.Globalization;
DateTime datuMDokumenta;
bool result = DateTime.TryParse(txtDatumDokum.Text, CultureInfo.CreateSpecificCulture("de-DE"), DateTimeStyles.None, out datuMDokumenta);
A list of cultures can be found here, select the appropriate one for you:
http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo%28v=vs.71%29.aspx
The plus here is that this code is a bit more work but it is very difficult to break. Assuming you are using a free text entry on a TextBox you don't want to be throwing exceptions.
Yes you have to parse input date in current culture.
string[] format = new string[] { "dd.MM.yyyy" };
string value = "09.09.2011";
DateTime datetime;
if (DateTime.TryParseExact(value, format, System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.NoCurrentDateDefault, out datetime))
//Valid
else
//Invalid
DateTime dt = Convert.ToDateTime(txtDatumDokum.Text)
It is right...there is no isssue
During a Deserialization call under compact framework 3.5 i've had some unexpected behaviour before.
I've converted from using the OpenNETCF serialization classes to the framework XML serialization class. In doing so, the default time format has changed and the order of property/public members. So long story short, i've exposed a text property which converts my date-times back to the format my VB6 application is expecting.
Dim dumbDate As New Date
Dim formats() As String = {"yyyy-MM-ddTHH:mm:ss.fffzzz", _
"yyyy-MM-dd HH:mm:ss:fffffffzzz"}
_datetimeTaken = dumbDate.ParseExact(value, formats, CultureInfo.InvariantCulture, DateTimeStyles.None)
' There is something wrong with compact framework during the Serialization calls.
' calling the shared method Date.Parse or Date.ParseExact does not produce the same
' result as calling a share method on an instance of Date. WTF?!?!?!
' The below will cause a "Format" exception.
'_datetimeTaken = Date.ParseExact(value, formats, CultureInfo.InvariantCulture, DateTimeStyles.None)
Date.blah doesn't work. dumbDate.blah works. strange.
public static void Main(string[] args)
{
var dt = new DateTime(2018, 04, 1);
Console.WriteLine(dt);
string month = dt.ToString("MMMM");
Console.WriteLine(month); //April
month = dt.ToString("MMM");
Console.WriteLine(month); //Apr
month = dt.ToString("MM");
Console.WriteLine(month); //04
Console.ReadKey();
}
your code:
DateTime datuMDokumenta = Convert.ToDateTime(txtDatumDokum.Text);
try changing this to:
DateTime datuMDokumenta = Convert.ToDateTime(txtDatumDokum);
and when u print the date/time
print datuMDokumenta.Text
I receive text from a *.csv file in any date format
For example: dd/mm/yy or dd/mm/yyyy or mm/dd/yyyy or 4 may 2010......
How I can convert to just a single type of format: dd/mm/yyyy ?
I'm working on C#, .NET 3.5, WinForms
Thanks in advance
If you're receiving data in multiple formats and you can't identify them, you've got problems. What does "09/07/2010" mean? September 7th or July 9th? This is the first thing to get straight in your mind, and it has nothing to do with technology. You have two contradictory formats - how are you going to deal with them? Sample the file and pick whichever looks most likely? Treat each line separately, favouring one format over another? Ask the user?
Once you've parsed the data correctly, formatting it in the desired way is easy, as per John's answer. Note that you must use "MM" for the month, not "mm" which represents minutes. You should also specify which culture to use (affecting the date separators) assuming you don't just want to take the system default.
DateTime.Parse("your data").ToString("dd/MM/yyyy");
Check out TryParseExact.
public static string FormatDate(string input, string goalFormat, string[] formats)
{
var c = CultureInfo.CurrentCulture;
var s = DateTimeStyles.None;
var result = default(DateTime);
if (DateTime.TryParseExact(input, formats, c, s, out result))
return result.ToString(goalFormat);
throw new FormatException("Unhandled input format: " + input);
}
Example Usage
var formats - new[] { "dd/MM/yy", "dd/MM/yyyy" };
var next = csvReader.Get("DateField");
var formattedDate = FormatDate(next, "dd/MM/yyyy", formats);
using System;
using System.Collections.Generic;
using System.Text;
using System.Globalization;
namespace dateconvert
{
class Program
{
static void Main(string[] args)
{
DateTime x = Convert.ToDateTime("02/28/10");
Console.WriteLine(string.Format(x.ToString("d", DateTimeFormatInfo.InvariantInfo)));
DateTime y = Convert.ToDateTime("May 25, 2010");
Console.WriteLine(string.Format(y.ToString("d", DateTimeFormatInfo.InvariantInfo)));
DateTime z = Convert.ToDateTime("12 May 2010");
Console.WriteLine(string.Format(z.ToString("d", DateTimeFormatInfo.InvariantInfo)));
Console.Read();
}
}
}
String.Format("{0:MM/dd/yyyy}", DateTime.Now);
String.Format("{0:dd/MM/yyyy}", DateTime.Now);
etc.
Source: http://www.csharp-examples.net/string-format-datetime/
You simply want to be using the DateTime.ParseExact together with the DateTime.ToString methods.
The straight DateTime.Parse method has its uses of course, and can be clever for parsing dates that you know are in a specific culture/locale, but since it seems dates given to you may be in an arbitrary format that cannot be recognised, you may want to specifically use ParseExact.
Example:
var myDate = DateTime.ParseExact("07/14/2010", "MM/dd/yyyy",
CultureInfo.CurrentCulture);
var standardDateString = myDate.ToString("dd/MM/yyyy");