I have a DateTime picker to add arrival time to a list, I have 2 questions about it:
How can I get it to show dates like 12-Jan-2012 Instead of 12/01/12?
How can I get it to show the time after the date but not the current time, as thats what is shows atm.
My current code is not very advanced its just:
theVisit.ArrivalTime = DateTimePicker1.Value
Something like this will display the date and time:
DateTimePicker1.Value.ToString("d-MMM-yyyy hh:mm:ss");
To override the default DateTimePicker settings, you can do this:
DateTimePicker1.Format = DateTimePickerFormat.Custom;
DateTimePicker1.CustomFormat = "d-MMM-yyyy hh:mm:ss";
You can show a different time by modifying the format string, e.g.:
DateTimePicker1.CustomFormat = "d-MMM-yyyy 12:00:00";
or even
DateTime otherTime = DateTime.Now;
DateTimePicker1.CustomFormat = "d-MMM-yyyy " + otherTime.ToString("hh:mm:ss");
For it to show in that format in the picker, set the properties below
dateTimePicker1.Format = DateTimePickerFormat.Custom;
dateTimePicker1.CustomFormat = "dd-MMM-yyyy hh:mm:ss";
You're looking for DateTime Format strings. There's a great article on them on MSDN.
There's two types:
Standard DateTime Formats
Custom DateTime Formats
You can use these to construct the datetime to look how you want it to.
For your example, you would use :
DateTimePicker1.Value.ToString("dd-MMM-yyyy hh:mm:ss")
First, to alter how your DateTimePicker displays DateTimes:
DateTimePicker1.CustomFormat = "d-MMM-yyyy hh:mm:ss";
DateTimePicker1.Format = System.Windows.Forms.DateTimePickerFormat.Custom;
Your code:
theVisit.ArrivalTime = DateTimePicker1.Value;
Would not change, because the DateTimePicker1.Value isn't any different, it's just displayed according to your format.
If you want the control to display a specific time (not the current time), you have to give the control that value:
DateTimePicker1.Value = new DateTime(2012, 12, 21, 23, 59, 59);
Otherwise it will display the current time as of the form creation.
You may check datetimepicker like this to check if it is empty.
if(DatTimePicker1.Text.Equals(" "))
{
MessageBox.Show("DateTimePicker is empty");
}
Related
I want to do dateTimePicker to choose and read only year. This is my code, but when on third row where is dateTimePicker1.Value it's someone else because when i open file is show me hour, date, month and year. I trying to change value with customformat but make me mistake and want to change to string. Whan I change to string like: string dt = dateTimePicker1.CustomFormat; started it give me the same result like value. Where is the problem?
dateTimePicker1.Format = DateTimePickerFormat.Custom; //1
dateTimePicker1.CustomFormat = "yyyy"; //2
DateTime dt = dateTimePicker1.Value; //3
fp.Seek(0, SeekOrigin.End); //4
bw.Write(dt.ToString()); //5
You need to use just ToString method:
dateTimePicker1.Value.ToString("yyyy");
How can I convert a system date format (like 3/18/2014) to the format readable in DateTime?
I wanted to get the total days from two dates, which will come from two TextBoxes.
I have tried this syntax:
DateTime tempDateBorrowed = DateTime.Parse(txtDateBorrowed.Text);
DateTime tempReturnDate = DateTime.Parse(txtReturnDate.Text);
TimeSpan span = DateTime.Today - tempDateBorrowed;
rf.txtDaysBorrowed.Text = span.ToString();
But tempDateBorrowed always returns the minimum date for a DateTime varibale. I think this is because DateTime does not properly parse my system date format. As a consequence, it incorrectly displays the number of days. For example, if I try to enter 3/17/2014 and 3/18/2014 respectively, I always get -365241 days instead of 1.
Edit: I wanted my locale to be non-specific so I did not set a specific locale for my date format. (My system format by the way is en-US)
Try DateTime.ParseExact method instead.
See following sample code (I've used strings instead of TextBoxes since I used a Console app to write this code). Hope this helps.
class Program
{
static void Main(string[] args)
{
string txtDateBorrowed = "3/17/2014";
string txtReturnDate = "3/18/2014";
string txtDaysBorrowed = string.Empty;
DateTime tempDateBorrowed = DateTime.ParseExact(txtDateBorrowed, "M/d/yyyy", null);
DateTime tempReturnDate = DateTime.ParseExact(txtReturnDate, "M/d/yyyy", null);
TimeSpan span = DateTime.Today - tempDateBorrowed;
txtDaysBorrowed = span.ToString();
}
}
ToString is not Days
TimeSpan.TotalDays Property
You can try specifying the format of the datetime in the textboxes like this
DateTime tempDateBorrowed = DateTime.ParseExact(txtDateBorrowed.Text.Trim(), "M/d/yyyy", CultureInfo.InvariantCulture);
DateTime tempReturnDate = DateTime.ParseExact(txtReturnDate.Text.Trim(), "M/d/yyyy", CultureInfo.InvariantCulture);
Also you may have to check if the values from the textboxes are valid.
My first thought is to just replace the TextBox controls with a DateTimePicker or equivalent, depending on what platform you're developing on. Converting strings to dates or vice-versa is more of a pain than it seems at first.
Or you could try using DateTime.ParseExact instead, to specify the exact expected format:
DateTime tempDateBorrowed =
DateTime.ParseExact("3/17/2014", "M/dd/yyyy", CultureInfo.InvariantCulture);
Or you could specify a specific culture in the call to DateTime.Parse:
var tempDateBorrowed = DateTime.Parse("17/3/2014", new CultureInfo("en-gb"));
var tempDateBorrowed = DateTime.Parse("3/17/2014", new CultureInfo("en-us"));
try formatting your date to iso 8601 or something like that before parsing it with DateTime.Parse.
2014-03-17T00:00:00 should work with DateTime.Parse. ("yyyy-MM-ddTHH:mm:ssZ")
Try this:
if(DateTime.TryParseExact(txtDateBorrowed.Text, "M/d/yyyy", CultureInfo.InvariantCulture, DateTimeStyles.None, out tempDateBorrowed))
{
TimeSpan span = DateTime.Today - tempDateBorrowed;
}
this is my code:
dateTimePicker1.ShowUpDown = true;
dateTimePicker1.CustomFormat = "HH:MM";
dateTimePicker1.Format = System.Windows.Forms.DateTimePickerFormat.Custom;
Hi I use Custom Format for my dateTimePicker until do not show second but its format hide AM/PM in dateTimePicker how can show AM/PM in this format
just add tt for AM/PM.
dateTimePicker1.CustomFormat = "HH:mm tt"
and it should be mm for minutes.
Custom Date and Time Format Strings
I'm using the datetimepicker to get two dates. They are coming out like this: 24-11-2011..
I want to have them like this: 2011-11-24..
I've tried to accomplish this by doing this method, but its only changes the datetimepicker on the interface..
DateTimePicker1.Format = DateTimePickerFormat.Custom;
DateTimePicker1.CustomFormat = "yyyy-MM-dd";
This is my code. The output says 24-11-2011. I want it to say 2011-11-24.
string sta = dateTimePicker1.Value.ToShortDateString();
string en = dateTimePicker2.Value.ToShortDateString();
Console.WriteLine(sta);
ctrscan.getListOfDates(sta, en);
How can I do this?
thanks
The Value property of the DateTimePicker control will return DateTime type, not string.
To format this have such code:
string myDate = DateTimePicker1.Value.ToString("yyyy-MM-dd");
To change it "globally" change the default in the machine Regional Settings.
Change your System Date Format then only it will display correctly using Console.WriteLine(sta);
How can I format a date as dd/mm/yyyy or mm/dd/yy ?
Like in VB format("dd/mm/yy",now)
How can I do this in C#?
It's almost the same, simply use the DateTime.ToString() method, e.g:
DateTime.Now.ToString("dd/MM/yy");
Or:
DateTime dt = GetDate(); // GetDate() returns some date
dt.ToString("dd/MM/yy");
In addition, you might want to consider using one of the predefined date/time formats, e.g:
DateTime.Now.ToString("g");
// returns "02/01/2009 9:07 PM" for en-US
// or "01.02.2009 21:07" for de-CH
These ensure that the format will be correct, independent of the current locale settings.
Check the following MSDN pages for more information
DateTime.ToString() method
Standard Date and Time Format Strings
Custom Date and Time Format Strings
Some additional, related information:
If you want to display a date in a specific locale / culture, then there is an overload of the ToString() method that takes an IFormatProvider:
DateTime dt = GetDate();
dt.ToString("g", new CultureInfo("en-US")); // returns "5/26/2009 10:39 PM"
dt.ToString("g", new CultureInfo("de-CH")); // returns "26.05.2009 22:39"
Or alternatively, you can set the CultureInfo of the current thread prior to formatting a date:
Thread.CurrentThread.CurrentCulture = new CultureInfo("en-US");
dt.ToString("g"); // returns "5/26/2009 10:39 PM"
Thread.CurrentThread.CurrentCulture = new CultureInfo("de-CH");
dt.ToString("g"); // returns "26.05.2009 22:39"
string.Format("{0:dd/MM/yyyy}", DateTime.Now)
Look up "format strings" on MSDN to see all formatting options.
Use yy, yyyy, M, MM, MMM, MMMM, d, dd, ddd, dddd for the date component
Use h, hh, H, HH, m, mm, s, ss for the time-of-day component
In you can also write
DateTime aDate = new DateTime();
string s = aDate.ToShortDateString();
for a short notation
or
DateTime aDate = new DateTime();
string s = aDate.ToLongDateString();
for a long notation like "Sunday, Febuary 1, 2009".
Or take a look at MSDN for the possibities of .ToString("???");
Try this :
String.Format("{0:MM/dd/yyyy}", DateTime.Now); // 01/31/2009
String.Format("{0:dd/MM/yyyy}", DateTime.Now); // 31/01/2009
String.Format("{dd/MM/yyyy}", DateTime.Now); // 31/01/2009
Better yet, use just
DateTime.Now.ToString()
or
DateTime.Now.ToString(CultureInfo.CurrentCulture)
to use the format the user prefers.
I ran into the same issue. What I needed to do was add a reference at the top of the class and change the CultureInfo of the thread that is currently executing.
using System.Threading;
string cultureName = "fr-CA";
Thread.CurrentThread.CurrentCulture = new CultureInfo(cultureName);
DateTime theDate = new DateTime(2015, 11, 06);
theDate.ToString("g");
Console.WriteLine(theDate);
All you have to do is change the culture name, for example:
"en-US" = United States
"fr-FR" = French-speaking France
"fr-CA" = French-speaking Canada
etc...
I think this is simple as you can convert to and from any format without any confusion
DateTime.ParseExact(txt.Text, "dd/MM/yyyy", CultureInfo.InvariantCulture).ToString("yyyy/MM/dd"));