WPF中的Application.OpenForms [0] .InvokeRequired等效项

Question

我需要等效于Application.OpenForms [0]。Winpfs中的wpf需要InvokeRequired。我尝试了

var dispatcher = myDispatcherObject.Dispatcher;
if (dispatcher.CheckAccess()) { /* ... */ }

但没有运气

Answer 1

尝试以下扩展方法：

    public static void TryToExecuteOnUI(this Action uiAction)
    {
        var uiDispatcher = System.Windows.Threading.Dispatcher.CurrentDispatcher;
        if (uiDispatcher.CheckAccess() == false)
        {
            uiDispatcher.Invoke(uiAction);
            return;
        }

        uiAction();
    }