I'm looking for a way to add a timer (or stopwatch) that will start counting from 0 the moment the application is launched or a button is clicked, and keeps counting even after the user navigates through different pages, and then be able to display how much time has passed in the last page of the application. I've been messing around with the DispatcherTimer class, but to be honest, I'm having trouble understanding it. Any help, or even a nod in the right direction would be greatly appreciated!
If you want to use a time, you could add one on the page showing time!
Add this code to the constructor or somewhere else where you want to activate the timer. (The App.StartTime is the same as i wrote in the other answer)
DispatcherTimer timer = new DispatcherTimer();
timer.Tick +=
delegate(object s, EventArgs args)
{
TimeSpan time = (DateTime.Now - App.StartTime);
this.timenow.Text = string.Format("{0:D2}:{1:D2}:{2:D2}", time.Hours, time.Minutes, time.Seconds);
};
timer.Interval = new TimeSpan(0, 0, 1); // one second
timer.Start();
You just have to store the time when your app launch and then subtract the current time from the stored value.
in your App.cs store the time when application launch:
private static DateTime _starttime = DateTime.Now;
public static DateTime StartTime
{
get
{
return _starttime;
}
}
In your page or any where you need to get the current time the application has run, you just have to subtract then current time from the stored time. I have used it in a button click handler, see below:
private void timebutton_Click(object sender, RoutedEventArgs e)
{
TimeSpan time = (DateTime.Now - App.StartTime);
this.timenow.Text = string.Format("{0:D2}:{1:D2}:{2:D2}", time.Hours, time.Minutes, time.Seconds);
}
Related
Hello, I am working on my first project in school, which is a simple Brick-Breaker game.
I've got a problem which occours when I click on the "Pause" button, the timer stops, but when I click on the "Continue" Button, the timer continues as if the the game was never paused.
I've extensivly searched for an answer but was not able to find one which was possible for me to intergrate into my program (I've only been programming for 2 months.)
My program is almost ready, and it's all divided into classes and methods, therefore it'll be a bit harder for me to paste exactly the important lines, but I'll give it a try anyways.
I had tried several solutions, like creating a stopwatch and then declaring the timer as
_time.Text = (duration.TotalSeconds - pausingTimer.Elapsed.TotalSeconds).ToString
But unfortunetly that way of thinking got me nowhere so far. These are the lines which affect the pause and continue features of the game.:
//data members (of Game Manager class)
private DispatcherTimer gamingLoopTimer = new DispatcherTimer();
private DateTime _startTime;
private TimeSpan _timeSpan;
private Stopwatch pausingTimer = new Stopwatch();
//ct'or
_timeSpan = new TimeSpan(0, 0, 0, 0, 1);
_difficultyTimeSpan = new TimeSpan(0, 0, 0, 0, 800);
public void StartGame()
{
gamingLoopTimer.Interval = _timeSpan;
gamingLoopTimer.Tick += GamingLoopHandler;
gamingLoopTimer.Start();
increasingDifficultyTimer.Interval = _difficultyTimeSpan;
increasingDifficultyTimer.Tick += IncreasingDifficulty;
increasingDifficultyTimer.Start();
_startTime = DateTime.Now;
private void GamingLoopHandler(object sender, object e)
{
UpdateGameState();
DrawState();
}
private void DrawState()
{
TimeSpan duration = DateTime.Now - _startTime;
_time.Text = (duration.TotalSeconds - pausingTimer.Elapsed.TotalSeconds).ToString
public void StopButton()
{
pausingTimer.Start();
gamingLoopTimer.Stop();
increasingDifficultyTimer.Stop();
_hasStopped = true;
PromptGameStop();
}
private void ContinueToPlay(IUICommand command)
{
pausingTimer.Stop();
pausingTimer.Reset();
gamingLoopTimer.Start();
increasingDifficultyTimer.Start();
_hasStopped = false;
}
note: I've tried to copy only the important code for the question, I hope I didn't delete anything important for the understanding of the answerers.
As stated above, the timer stops, but then continues as if it never stopped.
For example, should I press the "Pause" button at the 5-second mark, and click "Continue" after 15 seconds, the timer will continue from 20.
Thank you for your answers.
Currently developing a simple windows phone 8.1 silverlight app with an implemented countdown time. I have it working where I can input a set amount of minutes and it countdowns fine but what I am wanting to happen is for a user to input an amount of minutes and to countdown in seconds from there, for example it is currently 10, 9, 8, 7, 6, 5 when 10 seconds is input.
What I want to happen is that the user inputs 5 and it counts down like so:
4:59
4:58
4:57
This is my current code:
timer = new DispatcherTimer();
timer.Interval = new TimeSpan(0, 0, 1);
timer.Tick += timer_Tick;
basetime = Convert.ToInt32(tbxTime.Text);;
tbxTime.Text = basetime.ToString();
timer.Start();
}
void timer_Tick(object sender, object e)
{
basetime = basetime - 1;
tbxTime.Text = basetime.ToString();
if (basetime == 0)
{
timer.Stop();
}
You can keep most of your existing code if you just make basetime a TimeSpan instead of an int. It's easy to set its value from Minutes or Seconds via the appropriate static method.
var basetime = TimeSpan.FromMinutes(5);
Then you can subtract one second from it like this:
basetime -= TimeSpan.FromSeconds(1);
And display it like this:
tbxTime.Text = basetime.ToString(#"m\:ss");
Finally, comparing it to zero is also trivial:
if (basetime <= TimeSpan.Zero)
See Custom TimeSpan Format Strings for more display options.
I think you can just make use of suitable formatting of TimeSpan class (you will surely find many examples on SO). The easy example can look like this (I assume that you have a TextBox where you enter time and TextBlock which shows counter);
DispatcherTimer timer = new DispatcherTimer() { Interval = TimeSpan.FromSeconds(1) };
TimeSpan time;
public MainPage()
{
this.InitializeComponent();
timer.Tick += (sender, e) =>
{
time -= TimeSpan.FromSeconds(1);
if (time <= TimeSpan.Zero) timer.Stop();
myTextBlock.Text = time.ToString(#"mm\:ss");
};
}
private void TextBox_TextChanged(object sender, TextChangedEventArgs e)
{ time = TimeSpan.FromMinutes(int.Parse((sender as TextBox).Text)); }
private void startBtn_Click(object sender, RoutedEventArgs e)
{ timer.Start(); }
Note that this is a very simple example. You should also think if DispatcherTimer is a good idea - it works on dispatcher, so in case you have some big job running on main UI thread it may not count the time properly. In this case you may think of using different timer, for example System.Threading.Timer, this runs on separate thread, so you will have to update your UI through Dispatcher.
I am bit New here ...and learning Threading.Timer ... I have a timer in Window Service which fires a function at 16:48:00 ..I just want to Fire the Timer Again at 21:00:00 PM ...then 22:00:00 ...there is no fix timer interval between the timeslots
here is My Code what I have Tried:
public partial class ASMSService1 : ServiceBase
{
private Timer myTimer;
private DateTime inputDate;
private DateTime yesterday;
private DateTime today;
public ASMSService1()
{
InitializeComponent();
}
protected override void OnStart(string[] args)
{
inputDate = DateTime.Today;
today = DateTime.Today;
yesterday = today.AddDays(-1);
//time is Set here
SetTimer(16, 48, 00);
}
private void SetTimer(int hours, int minutes, int seconds)
{
inputDate = DateTime.Today.AddHours(hours).AddMinutes(minutes).AddSeconds(seconds);
String date1 = inputDate.TimeOfDay.ToString();
if (DateTime.Now > inputDate)
{
inputDate = inputDate.AddDays(1);
}
if (date1.CompareTo("16:48:00") == 0)
{
myTimer = new System.Threading.Timer(new TimerCallback(FirstSlotOperations));
myTimer.Change((int)(inputDate - DateTime.Now).TotalMilliseconds, Timeout.Infinite);
}
}
private void FirstSlotOperations(object e)
{
//some operation
//Need to reset the Timer at 21:00:00
}
}
I have found the timer.change From MSDN article ..But I am not sure How to implement it in my case
I have Tried Thread.sleep()..But I am looking for some alternative also if possible ..
any suggestion would be Helpful
I think Artyom Kharlamov is right, if you provide more details about what specific functionality do you intend to achieve, there is a better chance to get an answer that is closer to what you need.
My take on what you have currently presented:
If you want the service to perform a specific operation whenever the time of the day is equal to a predefined value (for example 16:48 as per your provided code), i think your approach is kind of complicated since you could achieve this easier by using Scheduled Tasks, which will also cover the case in which you're trying to perform an operation within your service not on a specific time of the day but every x amount of time.
The timer object doesn't seem to expose any property or method that will tell you how much time has ellapsed since it first started ticking, for that you can use properties and get the current time whenever SetTimer is called, set a property in the ASMSService1 class and get the difference with the current time when FirstSlotOperations is called.
Maybe this isn't exactly what you want to do but unless you get a little more specific about your expectations it's hard to address them efficiently.
You don't need any object to get current time. Just use:
private void FirstSlotOperations(object e)
{
DateTime current = DateTime.Now;
}
An object passed as an argument in callback function is timer object so you can't get data from it. You can use it only to operate on timer object for example.
private void FirstSlotOperations(object e)
{
Timer t = e as Timer;
t.Change(1000, 0);
}
I have a form which includes a textbox showing the time passing with an interval of 1 second up till 2 minutes. It is working ok. However I need the timer to stop when a round of game is over and start again when a button from another form is clicked. So I have _timer.Stop() in the timer_tick event handler and _timer.Start() in the button click event handler of Form 2.
My problem is that the timer then starts from how much time passes until I press the button on the other form and not from 0:00 again. Any Ideas?
This is the code regarding the timer:
private DateTime _myDateTime;
private System.Windows.Forms.Timer _timer;
private DateTime newDate;
public Tournament()
{
_timer = new System.Windows.Forms.Timer();
_timer.Interval = 1000;
_timer.Tick += Timer_Tick;
_myDateTime = DateTime.Now;
newDate = new DateTime();
newDate = newDate.AddMinutes(2.00);
_timer.Start();
InitializeComponent();
}
void Timer_Tick(object sender, EventArgs e)
{
var diff = DateTime.Now.Subtract(_myDateTime);
this.textBox1.Text = diff.ToString(#"mm\:ss");
DateTime dt = Convert.ToDateTime(diff.ToString());
if (newDate.Minute == dt.Minute)
{
_timer.Stop();
_myDateTime = DateTime.Now;
displayPointsOrResults();
this.textBox1.Text = diff.ToString(#"mm\:ss");
}
}
In displayPointsOrResults() I am creating instance of another form Points() so in Points form I have button 1 and I have this in its event handler apart other things which does not concern the timer: tournament.Timer1.Start();
Where I am getting the timer from the tournament class and starting it again.
What am I doing wrong?
My problem is that the timer then starts from how much time passes until I press the button on the other form and not from 0:00 again.
Well yes, it would - you're resetting _myDateTime when you stop the timer:
_timer.Stop();
_myDateTime = DateTime.Now;
You should move that second line to the point where you restart it.
Note that your title is incorrect - the timer really is stopping, in that it's not ticking any more. The timer isn't actually performing the timing, if you see what I mean - it's just a way of invoking an event handler regularly. The problem is within the event handler itself.
Ah the global vars, blessing and curse together.
Do you have resetted the _myDateTime to DateTime.Now, when you press the button?
When you stop the timer and restart it, should set the datetime to now.
_myDateTime = DateTime.Now;
Recently I was trying to make a calendar application that will display the current year-month-date to the user. The problem is, if the user is gonna keep my application running even for the next day, how do I get notified ?? How shall I change the date displayed ? I don't wanna poll the current date to update it. Is this possible in c#.
Note: I tried out the SystemEvent.TimeChanged event, but it works only if the user manually changes the time / date from the control panel.
#OddThinking's answer will work (you could set a timer for the interval instead of sleeping). Another way would be to set a timer with a 1 minute interval and simply check if the system date has changed. Since you are only executing some lightweight code once a minute, I doubt the overhead would be noticable.
public void Main()
{
var T = new System.Timers.Timer();
T.Elapsed += CallBackFunction;
var D = (DateTime.Today.AddDays(1).Date - DateTime.Now);
T.Interval = D.TotalMilliseconds;
T.Start();
}
private void CallBackFunction(object sender, System.Timers.ElapsedEventArgs e)
{
(sender as System.Timers.Timer).Interval = (DateTime.Today.AddDays(1).Date - DateTime.Now).TotalMilliseconds;
}
Can you simply work out the number of seconds until midnight, and then sleep for that long?
Try looking into monitoring WMI events, you should be able to create a Wql event query that monitors the day of week change (i.e. ManagementEventWatcher etc) and then setup an event handler that fires when the event arrives.
using System;
using System.Management;
class Program
{
public static void Main()
{
WqlEventQuery q = new WqlEventQuery();
q.EventClassName = "__InstanceModificationEvent ";
q.Condition = #"TargetInstance ISA 'Win32_LocalTime' AND TargetInstance.Hour = 22 AND TargetInstance.Minute = 7 AND TargetInstance.Second = 59";
Console.WriteLine(q.QueryString);
using (ManagementEventWatcher w = new ManagementEventWatcher(q))
{
w.EventArrived += new EventArrivedEventHandler(TimeEventArrived);
w.Start();
Console.ReadLine(); // Block this thread for test purposes only....
w.Stop();
}
}
static void TimeEventArrived(object sender, EventArrivedEventArgs e)
{
Console.WriteLine("This is your wake-up call");
Console.WriteLine("{0}", new
DateTime((long)(ulong)e.NewEvent.Properties["TIME_CREATED"].Value));
}
}
How about a thread that checks for change in date. The thread can have some events that the controls that need this information can subscribe to.