InvokeRequired in wpf [duplicate]
In WPF, the Invoke method is on the dispatcher, so you need to call Dispatcher.Invoke instead of Invoke. Also, there is no InvokeRequired property, but the dispatcher has a CheckAccess method (for some reason, it's hidden in intellisense). So your code should be:
delegate void ParametrizedMethodInvoker5(int arg);void log_left_accs(int arg){ if (!Dispatcher.CheckAccess()) // CheckAccess returns true if you're on the dispatcher thread { Dispatcher.Invoke(new ParametrizedMethodInvoker5(log_left_accs), arg); return; } label2.Text= arg.ToString();}
In WPF use the CheckAccess method instead of InvokeRequired
if (!CheckAccess()) { // On a different thread Dispatcher.Invoke(() => log_left_accs(arg)); return;}