counter in c# / wpf

You can use  timer with WPF. here is a sample:
http://www.c-sharpcorner.com/uploadfile/mahesh/timer-in-wpf/

hello

i did this part but it is only show timer

i need that when application start so it will count xxx min's and when is end so it will ask user with messgebox if to contion work or to close app

this is what i done
 private void dispatcherTimer_Tick(object sender, EventArgs e)
        {
           lblsleep.Content =(DateTime.Now.Hour.ToString() + ":" +
           DateTime.Now.Second.ToString());
        }

plz help me make it to what i need

thanks

You can get result of messagebox by dialogresult
DialogResult result = MessageBox.Show("Do you want close the app?", "Hi",
            MessageBoxButtons.OKCancel);
          switch (result)
          {
            case DialogResult.OK:
                {
                  this.Close();
                  break;
                }
            case DialogResult.Cancel:
                {
                  //your code here
                  break;
                }
          }
http://www.dotnetperls.com/messagebox-show
http://www.dotnetperls.com/dialogresult

yes but impletent the counter plz inside code

thanks

You set timer interval:
// Set the Interval to 2 seconds (2000 milliseconds).
aTimer.Interval = 2000;
-> aTimer.Interval = Counter*1000*60; counter in minuter.
http://msdn.microsoft.com/en-us/library/system.timers.timer.interval.aspx

wher i insert this?
i want to show the time run reverce that use show this all the time

plz
i wait you

thanks

you use datetime substract function:

http://stackoverflow.com/questions/5177002/how-to-subtract-a-datetime-from-another-datetime.

You declare a variable DateTime
in form constract or onform_loading add a code line :
DateTime StartTime= DateTime.Now;

 private void dispatcherTimer_Tick(object sender, EventArgs e)
        {
           lblsleep.Content =DateTime.Now.ToString("HH:mm:ss");
           int counter = DateTime.Now.SubStract(StartTime).Minutes ;
          if (counter == YourCounter)
          {
             DialogResult result = MessageBox.Show("Do you want close the app?", "Hi",
            MessageBoxButtons.OKCancel);
          switch (result)
          {
            case DialogResult.OK:
                {
                  this.Close();
                  break;
                }
            case DialogResult.Cancel:
                {
                  //your code here
                  break;
                }
          }
          }
        }
http://stackoverflow.com/questions/5177002/how-to-subtract-a-datetime-from-another-datetime

hi
i try this but have erros
plz look on files

thanks
Home2.xaml
Home2.xaml.cs

fix your code:
DateTime StartTime;
private void Window_Loaded(object sender, RoutedEventArgs e)
 {        
         DateTime StartTime= DateTime.Now;      
     }
   private void dispatcherTimer_Tick(object sender, EventArgs e)
        {
              DateTime StartTime= DateTime.Now;
              lblsleep.Content =DateTime.Now.ToString("HH:mm:ss");
              int counter = DateTime.Now.SubStract(StartTime).Minutes ;

          if (counter == YourCounter)
          {
             DialogResult result = MessageBox.Show("Do you want close the app?", "Hi",
            MessageBoxButtons.OKCancel);
          switch (result)
          {
            case DialogResult.OK:
                {
                  this.Close();
                  break;
                }
            case DialogResult.Cancel:
                {
                  //your code here
                  break;
                }
          }
          }

Hi
What is counter= your counter
Ehat is this?

Is ok o understand now
I will try this

Can you help with my quation about export wpf form to pdf?

Thanks

thank you