I want to get the clicks per second for a Button and save it in _clicksPerSecond.
I already got how many clicks the user did:
private void button_Click(object sender, RoutedEventArgs e)
{
_klicks++;
}
So, if i click on the button, the counter for a click goes up one, that value will be saved in a Highscore.txt file:
writeHighscore = _klicks + Environment.NewLine;
File.WriteAllText(Path.Combine(savePath, "Highscore.txt"), writeHighscore);
What i need is to count how many _klicks the user did in a second. But I don't know how to get the Time and how to get the value of _klicks just for the second. For now i only get the _klicks the user made all time.
I'm using a WPF-Project for that.
If you want an average, you should save the start time of the period over which you are averaging the clicks, so you can subtract it from the end time (which might be DateTime.Now).
Then you can calculate the average thus:
clicksPerSecond = _klicks / (_startTime - _endTime).TotalSeconds
This works because the DateTime subtraction operator returns a TimeSpan.
You can use a timer that every 1000 milliseconds checks the value of _klicks, saves it in your file and sets it back to 0
void main(){
timer = new Timer();
timer.Interval = 1000; // 1000 miliseconds = 1 second
timer.Tick += new EventHandler(timer_Tick);
timer.Enabled = true;
}
void timer_Tick(object sender, EventArgs e)
{
// Do what you need
var clicks = _klicks;
// method to save clicks to the file
_klicks = 0;
return clicks;
}
This is if you do not need to record when the clicks happened, in that case use the suggestions in the comments.
Related
How can i measure time between click in the way that if the time between button clicks is lets say >=1000 ms (1 sec) something happends, eg. Msgbox pops out.
private void button1_Click(object sender, EventArgs e)
{
Stopwatch sw = new Stopwatch();
double duration = sw.ElapsedMilliseconds;
double tt = 2000;
sw.Start();
if (duration >= tt)
{
textBox1.Text = "Speed reached!";
}
else
{
sw.Stop();
duration = 0;
}
}
You can do it like this:
On first click start the timer with time interval of 1000 ms
On second click stop the timer, or reset it back to zero
If the timer finishes without interruption, its event handler displays the message box.
As you have specifically tried to code using the Stopwatch class then I will provide a solution using that.
The problem with your attempt is that you need to declare your Stopwatch instance as a global variable, so you can access the same instance on different click events.
Stopwatch sw = new Stopwatch();
private void button1_Click(object sender, EventArgs e)
{
// First we need to know if it's the first click or the second.
// We can do this by checking if the timer is running (i.e. starts on first click, stops on second.
if(sw.IsRunning) // Is running, second click.
{
// Stop the timer and compare the elapsed time.
sw.Stop();
if(sw.ElapsedMilliseconds > 1000)
{
textBox1.Text = "Speed reached!";
}
}
else // Not running, first click.
{
// Start the timer from 0.
sw.Restart();
}
}
How do I wait for a specified time while showing the remaining time to wait?
I now solved it like this but I feel like this is a really bad way to do it:
//This is running in a BackgroundWorker:
Stopwatch watch = new Stopwatch();
watch.Start();
while(watch.ElapsedMilliseconds != SecondsToWait * 1000)
{
TimeToNextRefresh = ((SecondsToWait * 1000) - watch.ElapsedMilliseconds) / 1000;
Thread.Sleep(1);
}
watch.Stop();
So here I am guessing that the condition (watch.ElapsedMilliseconds != SecondsToWait * 1000) is checked every millisecond.
So the main question is; In what period is the condition of while checked and/or how do I improve the code I've written?
It depends on what's the code inside while loop!
For example, if you write some really long/time-consuming code in a while loop, each iteration of the while loop, or course, will be longer than a while loop that only has short/fast code.
Compare these two while loops:
while (true) {
Console.WriteLine("Hello");
}
and
while (true) {
Console.Beep(5000);
}
Each iteration of the first while loop is faster than that of the second one because Console.Beep(5000) takes 5 seconds and Console.WriteLine only takes a fraction of a second.
So you can't rely on while loops to count time.
This is what you should do:
Create an instance of System.Windows.Forms.Timer, not the System.Timers.Timer nor the System.Threading.Timer. I find the first one the most useful (others are more advanced).
Timer timer = new Timer();
timer.Interval = 1000; // 1000 means 1000ms aka 1 second
timer.Tick += TimerTicked;
timer.Start();
Now the compiler will tell you that TimerTicked is not defined, so let's go define that:
private void TimerTicked(object sender, EventArgs e) {
}
Now you're all set. The code in TimerTicked will be called every one second.
Let's say you want to measure a time of 10 seconds. After 10 seconds, you want to do something. So first create a variable called secondsLeft in the class level:
int secondsLeft = 10;
Now in TimerTicked, you want to check whether secondsLeft is 0. If it is, do that something, else, minus one:
if (secondsLeft == 0) {
DoSomething();
} else {
secondsLeft--;
}
And secondsLeft is the time remaining! You can display it on a label or something.
To pause the timer, simply
timer.Stop();
The exact interval in which your while condition is checked is hard to predict. Thread.Sleep(1); only tells the operating system that you want your thread to sleep for at least 1 millisecond. There is no guarantee that your thread will be active again after exactly 1ms. Actually you can rather be sure that it will be more than that. The thread is scheduled again after 1ms, but there will be a delay until he gets his CPU time slot.
The interval you want for your loop actually depends how you want to display the remaining time. If you want to display only seconds, why would you update that display every millisecond, although the text would change only every 1000ms?
A loop like that is probably not a good way to implement something like that. I would recommend a System.Threading.Timer:
// this Timer will call TimerTick every 1000ms
Timer timer = new Timer(TimerTick, null, 0, 1000);
and implement the handler
public void TimerTick(object sender)
{
// update your display
}
Note that you will have the "update your display" part on the UI thread again, as this method is called by the Timer on a different thread.
This code is can really make an infinite loop if a calculation just take longer than 1 miliseconds.
You can achieve your desired behaviour with a simple System.Winforms.Forms.Timer like this snipped below :
private int tickCount = 0;
private int remaining = 10;
private void timer1_Tick(object sender, EventArgs e)
{
remaining--;
textBox1.Text = remaining.ToString();
}
private void Form1_Load(object sender, EventArgs e)
{
timer1.Interval = 1000;
timer1.Enabled = true;
}
With this you can countdown from 10 seconds and every tick you write to a textbox the remaining seconds
This is my second question on StackOverflow here. I posted my first question a while ago and got a working reply in no time, much impressed, much appreciated.
Anyways, so what I want to know is, how to get a DispatcherTimer to work and show time in a certain textbox and stop it when it reaches a certain time (let's say 60 seconds) and perform a function after 60 seconds.
What I'm basically using this for is :
Making a game, which has to stop after 60 seconds and show the scores or related stuff. So this requires me to show the time in a textbox and perform a function at 60 seconds or after that.
Here's more information :
Textbox is called "timerbox"
Here's the code I've tried :
DispatcherTimer dt = new DispatcherTimer();
private void TimerStart(object sender, RoutedEventArgs e)
{
dt.Interval = TimeSpan.FromSeconds(1);
dt.Tick += dt_Tick;
dt.Start();
}
int count = 0;
void dt_Tick(object sender, object e)
{
count = count + 1;
timerbox.Text = Convert.ToString(count);
}
It doesn't show the time in textbox, plus I don't know how to make it stop at certain point and perform a function.
Thank you for reaching here, please leave answers with full explanation as I'm a complete beginner :)
P.S. I'm using Windows Store App Development Environment in Visual Studio 2013.
And there's no "Timer" in it as there is in normal C# Environment.
AOA.
I am recently started learning c#. (interested in windows form application). Hope this help you.
if you just want to set timer for a curtain event.....
recommend you using timer ( in toolbox )......
follow steps, when you double click on timer1 VS will create a timer1_Tick function for you which will be called every timer you timer ticks.....
now what you want to do when timer1 icks write it in there....like this....
private void timer1_Tick(object sender, EventArgs e)
{
//enter your code here
}
now write timer1. and VS will display a list of avaliable function....
for example,
timer1.Interval = (60*1000); //enter time in milliseconds
now when you want to start the write......
timer1.Start();
and to stop timer at any timer call
timer1.Stop();
if you want to repeat timer just write timer1.start() in that tick function.....
plus, to set textbox text equal to timer1 time use something like
textBox1.Text = Convert.ToString(timer1.Interval);
Click here for more information on timer class
hope this help you,
in case of any confusion, just comment,.....
The normal flow of a DispatcherTimer would look like this:
First Set up your new Object, set up the a new EventHandler that will run your desired code each Tick and Set the Timespan for the desired Tick Interval.
public MainPage()
{
this.InitializeComponent();
timer = new DispatcherTimer();
timer.Tick += new EventHandler<object>(timer_Tick);
timer.Interval = TimeSpan.FromMilliseconds(bpm);
}
Set The Timer_Tick Envent
async Void timer_Tick(object Sender, object e)
{
await this.Dispatcher.RunAsync(Windows.UI.core.CoreDispatcherPriority.High, () =>
{
//Run the Code
textBox1.text = timer.interval.TotalMilliseconds.ToString();
});
You have to have a trigger to Start the Dispatcher(and to stop if you need to), for example a button
private void StartButton_Click()
{
timer.Start();
}
This example was done using The new windows 10 Universal App platform within VS2015, but I think it should look about the same in a normal windows 8 App
I need to store the piano duration with Ticks as so then make the music note show according to that duration (Music players would know).
I'm using an interval of 100, but for some testing I used it at 1000.
The problem is this. When I'm invoking the method (I'm taking the 1000 millisecond interval one) the timer starts.. if I DO NOT manage to get the 1000 milliseconds it shows Duration 0: but then if I do for example 2 seconds, it shows 3 seconds, if I try to press it for another second (a different key) it would show 4 seconds instead of 1.
It's like it keeps on recurring. Same happened with the 100 interval one. It went mad. sometimes 40 sometimes 23 and so on. Any idea how to fix (resetting the timer)
N.B I'm using System.Windows.Forms.Timer as library
part of a method which invokes the methods further below
for (int i = 0; i < 15; i++)
{
WhiteKey wk = new WhiteKey(wKeys[i], wPos[i]-35,0); //create a new white Key with [i] Pitch, at that x position and at y =0 position
wk.MouseDown += onRightClick; //holds the Duration on Right Click
wk.MouseUp += onMouseUp;
wk.Click += new EventHandler(KeyClick); //Go to KeyClick Method whenever a key is pressed
this.panel1.Controls.Add(wk); //Give it control (to play and edit)
}
Methods controlling the time
private void onRightClick(object sender, MouseEventArgs e)
{
wk = sender as WhiteKey;
duration = 0;
t1.Enabled = true;
t1.Tick += timeTick;
t1.Interval = 100;
}
private void timeTick(object sender, EventArgs e)
{
duration++;
}
private void onMouseUp (object sender, MouseEventArgs e)
{
t1.Enabled = false;
String time = "Key: " + pitch + "\nDuration: " +duration ; //Test purposes to see if timer works
MessageBox.Show(time);
}
You are trying to measure time, don't use Timer, use Stopwatch.
You can find C# Stopwatch Exmples at dotnetpearls.com.
In abstract this is what you would want to do is something like this:
private void onRightClick(object sender, MouseEventArgs e)
{
stopwatch.Reset();
stopwatch.Start();
}
private void onMouseUp (object sender, MouseEventArgs e)
{
stopwatch.Stop();
String msg = "Duration in seconds: " + (stopwatch.ElapsedMilliseconds / 1000.0).ToString("0.00");
MessageBox.Show(msg);
}
Note: you may want to change the units or the string format.
Notes on using timer:
1) System.Windows.Forms.Timer uses the message loop of your window, this means that it may get delayed because the window is busy handling other events (such as click). For a better behaviour use System.Threading.Timer.
2) If using System.Windows.Forms.Timer don't set the Tick event handler each click. The event handler will execute once for each time you add it.
That is:
private void onRightClick(object sender, MouseEventArgs e)
{
wk = sender as WhiteKey;
duration = 0;
t1.Enabled = true;
//t1.Tick += timeTick; you should add this only once not each click
t1.Interval = 100;
}
3) If you use System.Threading.Timer you may want to make the variable duration volatile.
t1.Tick += timeTick;
By the way in your code sample you subscribe to the 'Tick' timer event each time on Right mouse click.
So if you click 2 times the
private void timeTick(object sender, EventArgs e)
method will be called twice, and 'duration++' will be executed twice. Your event subscription code should be executed only once for the timer.
P.S. If you need to measure duration, Timer is not the best way to do it.
I want to display current time on a label using C# but time will continuously change as system time changes. How can I do this?
Add a new Timer control to your form, called Timer1, set interval to 1000 (ms), then double click on the Timer control to edit the code-behind for Timer1_Tick and add this code:
this.label1.Text = DateTime.Now.ToString();
You can Add a timer control and specify it for 1000 millisecond interval
private void timer1_Tick(object sender, EventArgs e)
{
lblTime.Text = DateTime.Now.ToString("dd-MMM-yyyy hh:mm:ss tt");
}
Add a Timer control that is set to fire once every second (1000 ms). In that timer's Tick event, you can update your label with the current time.
You can get the current time using something like DateTime.Now.
Try the following code:
private void timer1_Tick(object sender, EventArgs e)
{
lblTime.Text = DateTime.Now.ToString("hh:mm:ss");
}
You must set the timer to be enabled also, either in code, or in the properties window.
in code, please type the following in the form load section:
myTimer.Enabled = true;
myTimer.Interval = 1000;
After that, make sure your timer event is similar to this:
private void myTimer_Tick(object sender, EventArgs e)
{
timeLabel.Text = DateTime.Now.ToString("hh:mm:ss");
}
Since the timer interval is not exact your update could be in bad sync and will be drifting with respect to the actual seconds transition. At some events you will lag behind or before the transition and miss updates in your time display
Instead of polling att high frequency to fire the update at the change of the seconds this method may grant you some respect.
If you like regulators you can adjust your time update to be safely located 100 ms after the actual second transition by adjusting the 1000 ms timer using the Millisecond property of the timestamp you want to display.
In the timer event code do something like this:
//Read time
DateTime time = DateTime.Now;
//Get current ms offset from prefered readout position
int diffms = time.Millisecond-100;
//Set a new timer interval with half the error applied
timer.Interval = 1000 - diffms/2;
//Update your time output here..
Next timer interval should then trigger closer to the selected point 100 ms after the seconds transition. When at the Transition+100ms the error will toggle +/- keeping your readout position in time.
private int hr, min, sec;
public Form2()
{
InitializeComponent();
hr = DateTime.UtcNow.Hour;
min = DateTime.UtcNow.Minute;
sec = DateTime.UtcNow.Second;
}
//Time_tick click
private void timer1_Tick(object sender, EventArgs e)
{
hr = DateTime.UtcNow.Hour;
hr = hr + 5;
min = DateTime.UtcNow.Minute;
sec = DateTime.UtcNow.Second;
if (hr > 12)
hr -= 12;
if (sec % 2 == 0)
{
label1.Text = +hr + ":" + min + ":" + sec;
}
else
{
label1.Text = hr + ":" + min + ":" + sec;
}
}