run and display of clock on C#

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hi how can i use datetimepicker on C# for display every seconds of time on project like date and of PC that changes every seconds?

Posted 16-Nov-13 3:46am

mohsenvasefi

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mohsenvasefi 16-Nov-13 9:47am

and counts intervally

2 solutions

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OriginalGriff · Answer 1 · 2013-11-16T03:51:00

Solution 1

A DateTimePicker isn't meant for display of date and time - it's meant for the user to enter information.

If you want to display the current date and time so that it changes every second:
0) Add a Label to your form
1) Add a Timer to your form.
2) Set it's Interval property to 500 - that's every half a second.
3) Set up a handler for its Tick event
4) In the handler, set the Label.Text property to the current time:

C#

myLabel.Text = DateTime.Now.ToString();

Posted 16-Nov-13 3:51am

OriginalGriff

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mohsenvasefi 16-Nov-13 10:15am

thank you
i've done by another method! look to up please and tell me it's right or not

Yücel Güven 16-Nov-13 10:16am

Just as an addition to OriginalGriff's solution, you can also change the time format with:
myLabel.Text = DateTime.Now.ToString("HH:mm:ss.fff");

mohsenvasefi 16-Nov-13 10:21am

and how can i change 6:53:23PM to 18:53:23?

Yücel Güven 16-Nov-13 10:28am

Capital letters for time uses 24hr format.
"HH" displays hour as 24hr format, whereas "hh" display as 12hr format

mohsenvasefi 16-Nov-13 10:31am

i know this, but couldn't find its function to use HH unfortunately

OriginalGriff 16-Nov-13 10:33am

ToString works well with all formats. See here:
http://www.codeproject.com/Tips/54577/Formatting-a-DateTime-for-display-format-string-de
It explains the various formats available.

mohsenvasefi 16-Nov-13 10:44am

it was excellent explain, but you didn't write how can i use "HH" to convert?!

OriginalGriff 16-Nov-13 11:12am

Would you like me to come round and type it for you? :laugh:
Sometimes, you have to apply what you read...
myLabel.text = DateTime.Now.ToString("HH:mm:ss");
the "HH" part is "24 hour clock"
myLabel.Text = DateTime.Now.ToString("hh:mm:ss tt");
would be "12 hour clock with leading zero, minutes, seconds and AM/PM indicator"

mohsenvasefi 17-Nov-13 0:29am

:D i knew this, you told me about this. but i want to update and change DateTimePicker to HH:MM:SS, not a label

mohsenvasefi · Answer 2 · 2013-11-16T04:18:00

Solution 3

i should have a Timer and a DateTimePicker. in timer tick, must write:

C#

private void timer1_Tick(object sender, EventArgs e)
        {
            dateTimePicker1.ResetText();
        }

and select timer interval=999 (because of run time delay) or 1000

Posted 16-Nov-13 4:18am

mohsenvasefi

Comments

CHill60 16-Nov-13 10:28am

Is this meant to be a solution or further details about your question?

mohsenvasefi 16-Nov-13 10:37am

both