Question

I’m getting this Exception

System.InvalidOperationException was unhandled by user code Message=’The calling thread cannot access this object because a different thread owns it.’

whenever I run the following code

public partial class MainScreen : Window {         Timer trm;          public MainScreen()         {             InitializeComponent();              trm = new Timer(1000);             trm.AutoReset = true;             trm.Start();             trm.Elapsed += new ElapsedEventHandler(trm_Elapsed);         }          void trm_Elapsed(object sender, ElapsedEventArgs e)         {             lblTime.Content = System.DateTime.Now;         } } 

guys any solution… I badly wann come out of it 🙁

Answer 1

Use DispatcherTimer instead:

public partial class MainScreen : Window{ DispatcherTimer tmr;     public MainScreen() { InitializeComponent(); tmr = new DispatcherTimer(); tmr.Tick += new EventHandler(tmr_Tick); tmr.Start();     } void tmr_Tick(object sender, EventArgs e) {     lblTime.Content = System.DateTime.Now; } }