CODEWITHSUNDEEP
c#wpf
nabulke
nabulke

Reputation: 11285

WPF window not closing

could you tell a beginner why this small WPF-application is not closing as intended after the WorkflowTerminated event fires? The used workflow just terminates immediately. (using a WPF application, .Net Framework 3.5)

public partial class MainWindow : Window
{
    private WorkflowRuntime wfRuntime = new WorkflowRuntime();

    public MainWindow()
    {
        InitializeComponent();

        wfRuntime.WorkflowTerminated += (se, ev) => this.Close(); // this doesn't close the window
        wfRuntime.WorkflowCompleted += (se, ev) => this.Close();
    }

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        WorkflowInstance launcherWorkflow = wfRuntime.CreateWorkflow(typeof(InstallerWorkflow));

        launcherWorkflow.Start();
    }
}

Upvotes: 5

Views: 3735

Answers (1)

Teoman Soygul
Teoman Soygul

Reputation: 25742

Probably because the callback is on another thread. A basic workaround is to terminate the application altogether using Environment.Exit(1);

To call the close function on the UI thread you should use:

wfRuntime.WorkflowTerminated += (se, ev) => {
    // call back to the window to do the UI-manipulation
    this.Dispatcher.Invoke(DispatcherPriority.Normal, new Action(delegate() 
    {
       this.Close();
    }));
};

Upvotes: 6

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