I want to make a Windows Form Application which only shows a timer as:
xx days
xx hours
xx minutes
xx seconds
No option for setting the timer or anything, i want to do that in the code
However, the problem is i want it to count down from current time (DateTime.Now)
to a specific date. So i end up with the time left as TimeSpan type. I'm now in doubt how to actually display this, so it's actually working, and updating (counting down)
Can't seem to find a tutorial that helps me, so i hope i may be able to get some help here :)
You can use a timespan format string and a timer:
DateTime endTime = new DateTime(2013,01,01,0,0,0);
private void button1_Click(object sender, EventArgs e)
{
Timer t = new Timer();
t.Interval = 500;
t.Tick +=new EventHandler(t_Tick);
TimeSpan ts = endTime.Subtract(DateTime.Now);
label1.Text = ts.ToString("d' Days 'h' Hours 'm' Minutes 's' Seconds'");
t.Start();
}
void t_Tick(object sender, EventArgs e)
{
TimeSpan ts = endTime.Subtract(DateTime.Now);
label1.Text = ts.ToString("d' Days 'h' Hours 'm' Minutes 's' Seconds'");
}
following will give you the countdown string
//Get these values however you like.
DateTime daysLeft = DateTime.Parse("1/1/2012 12:00:01 AM");
DateTime startDate = DateTime.Now;
//Calculate countdown timer.
TimeSpan t = daysLeft - startDate;
string countDown = string.Format("{0} Days, {1} Hours, {2} Minutes, {3} Seconds til launch.", t.Days, t.Hours, t.Minutes, t.Seconds);
Use ToDate.Subtract( Now ) then all you have to do is to format the TimeSpan that you get and show it on the form.
You should be able to google something like this and get literally hundreds of results.
http://channel9.msdn.com/coding4fun/articles/Countdown-to, here's the first one that looked good.
Related
I am writing a bot that gives a countdown to a specific day and time everyweek. In this case we will say today is Friday. I want to get the countdown till Saturday at 8. The problem with my current format is that it has a defined date. How can I have it work for every Saturday without a defined date for DateTime.Parse? If I cannot do it that way, what is a good alternative?
DateTime dt;
TimeSpan t;
string countDown = "";
dt = DateTime.Now;
dt.DayOfWeek.ToString();
if (dt.DayOfWeek.ToString() == "Friday")
{
//Get these values however you like.
DateTime productLaunchDateTime = DateTime.Parse("02/25/2017 08:00:00 PM");
DateTime startDate = DateTime.Now;
//Calculate countdown timer.
t = productLaunchDateTime - startDate;
countDown = string.Format("Release in {0} Days, {1} Hours, {2} Minutes, {3} Seconds", t.Days, t.Hours, t.Minutes, t.Seconds);
}
You can check this post. Quartz is what you looking for. Also you can check task scheduler for simple solution.
How to execute code at a given time every day?
Here is the code: Need to modify this to run the service every 15th day and last day of every month
this.serviceTimer.Interval = 300000; // 5 mins
this.serviceTimer.Elapsed += new ElapsedEventHandler (this.serviceTimer_Click);
this.serviceTimer.Start();
Logger.WriteEventLog("Service Started");
Just small Business logic to be done as shown below :
Set time interval for every 24 hours
timer.Interval = 60000*60*24;
Then check for current month and get number of days in current month so you will get total number of days then divide total number of days by 2 so that you have 2 dates
1) last day of month ie total no of days in month
2) middle date of month ie divided by 2
check for current date with these 2 days if it is equal then go for timeElapsed event
{
this.serviceTimer.Elapsed += new ElapsedEventHandler (this.serviceTimer_Click);
}
else
{
do nothing
}
In your serviceTimer_Click
{
...
DateTime nextExecute = DateTime.Now.AddMOnth(1);
timer.Stop();
timer.Interval = (nextExecute - DatTime.Now).TotalMilliseconds;
timer.Start();
}
And to start it:
{
...
DateTime now = DateTime.Now;
DateTime firstExecute = new DateTime( now.Year, now.Month, 15 ); //add time if needed...
if ( firstExecute < now )
{
firstExecute.AddMonth( 1 );
}
timer.Interval = (firstExecute - now).TotalMilliseconds;
}
Not compiled, but you get the drift...
Edit
Speaking about drift: to avoid your execution drifting to a later point in time, you could use a more clever way to build the nextExecute DateTime.
I have a datetime, I want to show the difference from DateTime.Now to received datetime and bind it. The result should be something like this:
1d 15h 13m 7s
What is the best way to do it? StringFormat? IValueConverter?
I'd suggest using the Timespans ToString method and custom TimeSpan format strings
Timespans if you aren't already aware are designed for measuring time intervals like this and can be convenienty obtained by subtracting one date from another.
var startDate = new DateTime(2013,1,21);
var currentDate = DateTime.Now;
TimeSpan interval = currentDate - startDate;
string intervalInWords = String.Format("{0:%d} days {0:%h} hours {0:%m} minutes {0:%s} seconds", interval);
Console.WriteLine(intervalInWords);
This will print out something like
267 days 10 hours 45 minutes 21 seconds
As has been noted in comments because these datetimes may be in different timezones/daylight saving times you should be very careful using this technique. Using UTCtime for both which is consistent throughout the whole year should be sufficient if that is feasible. In general it is often best policy to save all datetimes as UTC along with the timezone/offset (if required) and then if they are needed in a specific timezone offset convert on display.
Use TimeSpan
Example:
DateTime oldDate = new DateTime(2002,7,15);
DateTime newDate = DateTime.Now;
// Difference in days, hours, and minutes.
TimeSpan ts = newDate - oldDate;
// Difference in days.
int differenceInDays = ts.Days;
Now you can change it according to your requirement.
The other answers are correct from the formatting point of view, but just to address the WPF angle, I'm guessing you want to update a label/textbox so it constantly contains an accurate duration?
If so, you can do this with the timer and the dispatcher.
Timer code:
//duration in milliseconds, 1000 is 1 second
var timer = new Timer(1000);
timer.Elapsed += timer_Elapsed;
timer.Start();
Timer elapsed code:
//this is set elsewhere
private readonly DateTime _received;
void timer_Elapsed(object sender, ElapsedEventArgs e)
{
Application.Current.Dispatcher.Invoke(
DispatcherPriority.Normal,
new Action(()
=> //replace label1 with the name of the control you wish to update
label1.Content =
string.Format("{0:%d} days {0:%h} hours {0:%m} minutes {0:%s} seconds"
, (DateTime.Now - _received))));
}
You can use TimeSpan, also look out [here][1]
[1]: Showing Difference between two datetime values in hours i would suggest you to go through TimeSpan.
DateTime startDate = Convert.ToDateTime(2008,8,2);
DateTime endDate = Convert.ToDateTime(2008,8,3);
TimeSpan duration = startDate - endDate;
Create a property like DateProp of type DateTime to which you'll bind on your XAML , and assuming your property is Other_date_here, initialize it like this:
DateProp = DateTime.Now.Subtract(Other_date_here);
Last, on your XAML, bind it and set the formatting like this:
Text="{Binding Date, StringFormat=d day H hours m minutes s seconds}"
(or whatever other format you like:).
I want to display duration with milliseconds on a web page. So far I have done this:
I managed to display this output on a label: 00:02:50, but I want to display milliseconds as well, so the result should look like this 00:02:50:000. How do I achieve this?
Code behind:
protected void Page_Load(object sender, EventArgs e)
{
DateTime startTime = DateTime.Now;
// sleep for 2.5s
Thread.Sleep(2500);
DateTime stopTime = DateTime.Now;
TimeSpan duration = stopTime - startTime;
Result.Text = duration.ToString("mm':'ss':'ff");
}
First of all, if you're timing things I would recommend using the StopWatch class as that's what it's there for. You can find it in the System.Diagnostics namespace: System.Diagnostics.Stopwatch.
You can instantiate a new one and start measuring the elapsed amount of time with one line of code: var stop = System.Diagnostics.Stopwatch.StartNew(); and then stop the timer with the stop method: stop.Stop();. You can then return the elapsed time using the Elapsed property var elapsed = stop.Elapsed;.
Then in order to display the elapsed time with milliseconds you would call the ToString method on the elapsed timespan with the correct parameters.
So putting it all together your code would look like this:
protected void Page_Load(object sender, EventArgs e)
{
var timer = System.Diagnostics.Stopwatch.StartNew();
// sleep for 2.5s
Thread.Sleep(2500);
timer.Stop();
var elapsed = timer.Elapsed;
Result.Text = elapsed.ToString("mm':'ss':'fff");
}
Hope that helps!
James
Your current code should be displaying minutes, seconds, and hundredths of a second.
Result.Text = duration.ToString("mm':'ss':'ff");
To display milliseonds instead of hundredths of a second:
// output: 00:02:500
Result.Text = duration.ToString("mm':'ss':'fff");
See the documentation for Custom Date and Time Format Strings.
The doc says: "fff" gives you:
The milliseconds in a date and time value.
You're using "ff" which gives you:
The hundredths of a second in a date and time value.
So, change your code to:
duration.ToString("mm':'ss':'fff");
I think you're confused. In your case 00:02:50 means 2 seconds and 50 hundredths of second. If you want to display milliseconds, use format like mm':'ss':'fff (notice the one added f). This will print something like 00:02:500, i.e. 2 seconds and 500 thousandths of second, or 2 s 500 ms.
But this doesn't mean your measurements will be precise down to millisecond. That's not what DateTime.Now is meant to do. If you want to make measurements this precise, you should use StopWatch.
Use TimeSpan.ToString Method with custom format.
The returned string is formatted with the "c" format specifier and has the following format:
[-][d.]hh:mm:ss[.fffffff]
Elements in square brackets ([ and ]) may not be included in the returned string. Colons and periods (: and.) are literal characters.
Result.Text = duration.ToString("mm:ss:fff");
or
Result.Text = duration.ToString("hh:mm:ss.fff");
Ref :Custom Date and Time Format Strings, The "fff" Custom Format Specifier
DateTime date1 = new DateTime(2008, 8, 29, 19, 27, 15, 18);
CultureInfo ci = CultureInfo.InvariantCulture;
Console.WriteLine(date1.ToString("hh:mm:ss.fff", ci));
// Displays 07:27:15.018
Otherwise just use the properties from the timespan like this:
var result = String.Format("{0}:{1}:{2}", duration.Minutes, duration.Seconds, duration.Milliseconds);
Result.Text = result
This way I think you gain more control over what you want to display, instead of formatting the timespan in the ToString()-method which more easily allows typos to be made...
Hope this helps!
Update:
To add the hours as well this is how it'll look like:
var result = String.Format("{0}:{1}:{2}:{3}", duration.Hours, duration.Minutes, duration.Seconds, duration.Milliseconds);
I've a time ticker event, I want to write it to a label in format ( hours:minutes:seconds 00:00:00 ) it does not print the 0 values! it shows like ::1 when starts to count... what to do? Solved, thanks for all replies
private void timer_Tick(object sender, EventArgs e)
{
seconds++;
if(seconds == 59)
{
minutes++;
seconds = 0;
}
if(minutes == 59)
{
hours++;
minutes = 0;
}
this.label1.Text = string.Format("{0:##}:{1:##}:{2:##}", hours, minutes, seconds);
}
A better method is using DateTime and TimeSpan objects. For example:
DataTime start = <set this somehow>
void timer_Tick(...)
{
var elapsed = DateTime.Now - start;
label1.Text = string.Format("{0:HH:mm:ss}", elapsed);
}
Best would be to use TimeSpan and DateTime as others have said. If you want to continue using your current method, though, change the format string to:
string.Format("{0:00}:{1:00}:{2:00}", hours, minutes, seconds)
The 00 format will cause two digits to always be printed, even zeroes.
Try a thought experiment - set seconds and minutes to 58, and walk through your code and see what happens...
Use a TimeSpan