I'm trying to store a shortened date (mm/dd/yyyy) into a DateTime object. The following code below is what I am currently trying to do; this includes the time (12:00:00 AM) which I do not want :(
DateTime goodDateHolder = Convert.ToDateTime(DateTime.Now.ToShortDateString());
Result will be 10/19/2009 12:00:00 AM
DateTime is an integer interpreted to represent both parts of DateTime (ie: date and time). You will always have both date and time in DateTime. Sorry, there's nothing you can do about it.
You can use .Date to get the date part. In these cases, the time will always be 12:00 but you can just ignore that part if you don't want it.
You only have two options in this situation.
1) Ignore the time part of the value.
2) Create a wrapper class.
Personally, I am inclined to use option 1.
A DateTime will always have a time component - even if it is 12:00:00 AM. You just need to format the DateTime when you display it (e.g. goodDateHolder.ToShortDateString()).
Instead of .Now you can use .Today which will not remove the time part, but will only fill the date part and leave time to the default value.
Later on, as others pointed out, you should try to get the date part ignoring the time part, depending on the situation.
You'll always get the time portion in a DateTime type.
DateTime goodDateHolder = Convert.ToDateTime(DateTime.Now.ToShortDateString());
will give you today's date but will always show the time to be midnight.
If you're worried about formatting then you would try something like this
goodDateHolder.ToString("mm/dd/yyyy")
to get the date in the format that you want.
This is a good resource msdn-dateformat
You can also check out Noda Time based off the Java Joda Time library.
DateTime object stores both the date and the time. To display only the date, you would use the DateTime.ToString(string) method.
DateTime goodDateHolder = DateTime.Now;
// outputs 10/19/2009
Console.WriteLine(goodDateHolder.ToString("MM/dd/yyyy"));
For more information on the ToString method, follow this link
You might not be able to get it as a DateTime object...but when you want to display it you can format it in the way you want by doing something like.
myDateTime.ToString("M/d/yyyy") which gives 10/19/2009 for your example.
DateTime is merely a UInt64 with useful and clever formatting wrapped around it to make it appear like a date plus a time. You cannot eliminate the time element.
Related
I want to insert the DateTime.Now as dd-MMM-yyyy format, but it is giving me string is not recognized as valid datetime while I use ParseExact.
db.AddInParameter(objdbCommand, "#dtAddedOn", DbType.DateTime, DateTime.ParseExact(Convert.ToString(DateTime.Now), #"dd-MMM-yyyy", System.Globalization.CultureInfo.InvariantCulture));
I have also tried :
DateTime.ParseExact(Convert.ToString(DateTime.Now), #"dd-MMM-yyyy HH:mm:ss", System.Globalization.CultureInfo.InvariantCulture));
but it is giving me the same error
Since you are inserting a DateTime anyway, you do not need to Convert to string and parse back to DateTime.
db.AddInParameter(objdbCommand, "#dtAddedOn", DbType.DateTime, DateTime.Now);
will do the trick.
DateTime does not have a format. Format comes into play as soon as you need a textual representation of the value that the DateTime represents. I also wouldn't recommend to use Convert for this but one of DateTime.ToString overloads.
Edit:
If you do not want to include the Time part, i.e. insert the Date, only you can use DateTime.Now.Date (see Date Property) or even easier DateTime.Today. This will give you a DateTime object with Time components all set to zero.
Edit 2:
Mind that there are some inherent problems using DateTime, especially if your system is going to be used spanning different TimeZones. Going deeper into this would go beyond the scope of this answer, though. Just want to give you a heads-up.
You may want to checkout DateTimeOffset and related Articles like Choosing between DateTime, DateTimeOffset, TimeSpan, and TimeZoneInfo
I have a DataTable coming from a stored procedure which I'm writing to an excel file. There's a column with a DateTime datatype, and looking at the values in there, they're just generic dates with the time stamp.
I've tried using the DateTime.Date property, but that still gives me a time stamp. Further, I've tried to create a new DateTime object using the year,month,day constructor but it still adds a time stamp:
DateTime newDate = DateTime(oldDate.Year, oldDate.Month, oldDate.Day);
I'm trying to keep the column datatype to DateTime but remove the time stamp, so this rules out ToString("") formatting. Is there another way?
A DateTime always contains a date and a time portion. If you use the Date property it returns a new DateTime where the time is 0:00:00 so midnight at the same day. You want a string representation of the datetime without the time.
You can use DateTime.ToString:
string result = oldDate.ToString("d"); // uses current culture's date format
or
string result = oldDate.ToShortDateString(); // same as above
or
string result = oldDate.ToString("MM-dd-yyyy"); // custom format
Edit: "so this rules out ToString("") formatting. Is there another way?"
No, because of the reason mentioned above.
It's important to separate the data from how it is displayed. If you need to display it without time use the code above, you can store the original DateTime variable for future processing, select it again from database or use DateTime.Parse/DateTime.ParseExcact to get a DateTime from the string.
The 'problem' is that there is no Date struct in .NET, you only have a DateTime struct. That will always contain both date and time. You can only format it as date.
Or, you could of course write your own struct containing only the date part, or give up and use string.Format to format it as a date (possibly using the short date string d).
If you mean time part with timestamp, a DateTime instance always have both date and time part. DateTime.Date property just sets the time value set to midnight.
You can get it's string representation if you want only it's Date part. You can get standard date and time format or custom date and time format with DateTime.ToString() method.
Usually, you can use ShortDatePattern to get only string representation of Date part which uses standard "d" format of your CurrentCulture.
DateTime.Now.ToString("d");
There is a proposal for System.Date and System.Time types for .NET Framework in dotnet/corefx on GitHub page by the way.
Proposal: System.Date type
You should use DateTime.Now.ToShortDateString();
I know this may be a duplicate but using the .NET framework I can't seem to get the date and not the time for a WPF DatePicker.
I have this:
DatePicker.SelectedDate.Value.Date
I believed using the "Date" property would only return the date, but it returns the time "12:00:00" as well.
I read https://learn.microsoft.com/en-us/dotnet/api/system.datetime.date so I'm not sure what I am doing wrong.
I'm sure it's something silly as always, but with no helpful eye with me to tell me, I thought I resort to SO!
DatePicker.SelectedDate.Value.Date is a DateTime Nullable property. So any DateTime Property has the date and time section. but in this case it is not fill with the correct value and it will gives you the default value. if you want to get the date only use following code,
DatePicker.SelectedDate.Value.Date.ToShortDateString()
SelectedDate property is of type Nullable<DateTime> it gives you the date however the time is reset as 12:00:00 midnight (00:00:00)
see more on DatePicker.SelectedDate Property
from MSDN: DateTime.Date Property
The value of the Kind property of the returned DateTime value is the same as that of the current instance.
Because the DateTime type represents both dates and times in a single type, it is important to avoid misinterpreting a date returned by the Date property as a date and time. For more information, see "Saving and Restoring DateTime Values" in the DateTime topic.
While selecting the date from the datepicker in you code you can do following:
DateTime from = From_Date_Picker.SelectedDate.Value.Date
The following example uses the Date property to extract the date component of a DateTime value with its time component set to zero (or 0:00:00, or midnight). It also illustrates that, depending on the format string used when displaying the DateTime value, the time component can continue to appear in formatted output.
That says that depending on the Format (in this case the DatePicker i think) the Time component can appear. Like in your link, the Output is 12:00 AM
So Check the Format / properties of the DatePicker.
in your code, you can do the following:
string shortDate = datePicker.SelectedDate.Value.ToShortDateString();
or, if you'd like to specify the format of the date:
string formatDate = datePicker.SelectedDate.Value.ToString("yyyy-MM-dd");
Here datePicker is object of DatePicker WPF
Check to make sure your Windows regional settings are set to a 24hr clock. I'm guessing its returning 12AM
Using C#, I am trying to format a date in to the following string format:
YYYYMMDD_HHMM.xlsx
Here is my code:
DateTime.Today.AddDays(0).ToString("yyyymmdd") + "_" + DateTime.Today.AddDays(0).ToString("hhmm")
Here is my output:
20130027_1200.xlsx
Month is not correct, nor is the time.
You're using mm, which is minutes, not months - and you're trying to print the time using DateTime.Today, which always returns midnight at the start of the day.
It's not clear why you're adding 0 days, either. I'd use:
DateTime now = DateTime.Now;
string name = now.ToString("yyyyMMdd'_'HHmm'.xlsx'");
(The ' quoting for the _ isn't strictly necessary, but personally I find it simplest to take the approach of quoting everything that isn't a format specifier.)
Or:
DateTime now = DateTime.Now;
string name = string.Format("{0:yyyyMMdd}_{0:HHmm}.xlsx", now);
Note the use of HH instead of hh to get a 24-hour clock rather than 12-hour, too.
Additionally, consider using UtcNow instead of Now, depending on your requirements. Note that around daylight saving transitions, the clock will go back or forward, so you could end up with duplicate file names.
Also note how in my code I've used DateTime.Now once - with your original code, you were finding the current date twice, which could have given different results on each invocation.
Finally, you might also want to specify CultureInfo.InvariantCulture when you format the date/time - otherwise if the current culture is one which doesn't use a Gregorian calendar by default, you may not get the results you were expecting.
DateTime.Today returns DateTime with all time-related properties set to 0. Use DateTime.Now instead.
Property value
An object that is set to today's date, with the time component set to 00:00:00.
from DateTime.Today Property
Use MM in your format to get month. mm returns minutes. You can check all format specifiers on MSDN: Custom Date and Time Format Strings
I have a very stupid question.
When the end-user plans an action, the planned time must be visible on the usercontrol of the action like this (hh:mm). On every site I find about formatting dates into a string, they say to use {0:h} or {0:hh}. In my following code I do the same thing, it just doesn't work.
When the end-user plans an action, the returned string is now "Planned Start Date - HH:DD".
lblStartDatePlanned.Content = String.Format("Planned Start Date - {0:hh}:{1:dd}", date.Hour, date.Minute);
Object date is of type DateTime.
Anyone knows what is wrong? I don't want to waste too much time on such a small thing.
Thanks!
Use:
lblStartDatePlanned.Content = String.Format("Planned Start Date - {0:HH:mm}", date);
Generically, if you're trying to force 2 digits in a format string, you can also use:
String.Format("Planned Start Date - {0:00}:{1:00}", date.Hour, date.Minute);
Although, #Alessandro's answer is correct for your problem.
Try following:
lblStartDatePlanned.Content = date.ToString(#"hh\:mm");