Question

That’s my code inside my MainPage.xaml.cs

public MainPage()
{
    InitializeComponent();
    DispatcherTimer dt = new DispatcherTimer();
    dt.Interval = new TimeSpan(0, 0, 0, 0, 1000); // 1 Second
    dt.Tick += new EventHandler(dtTick);
}

Now after the MainPage Constractor I have and the dtTick EventHandler to DO SOMETHING and an EventHandler for a start button to make the Timer works

void dtTick(object sender, EventArgs e)
{
    var time = DateTime.Parse(theTimer.Text);
    time = time.AddSeconds(1);
    theTimer.Text = time.ToString("HH:mm:ss");
}

private void startButton_Click(object sender, RoutedEventArgs e)
{
     dt.Start();
}

So My question is how how can I make dt.Start(); works cause it’s a method called on an object that is located in my MainPage().

Answer 1

In your code behind file expose the Timer as a public/protected or private member or field.

private DispatcherTimer dt = null; 

public MainPage()    
{    
    InitializeComponent();    
    this.dt = new DispatcherTimer();    
    this.dt.Interval = new TimeSpan(0, 0, 0, 0, 1000); // 1 Second    
    this.dt.Tick += new EventHandler(dtTick);    
}    

private void startButton_Click(object sender, RoutedEventArgs e) 
{ 
     if (this.dt != null)
              this.dt.Start(); 
}