CODEWITHSUNDEEP
c#.netwpfxamlsplash-screen
user2341923
user2341923

Reputation: 4727

Non-modal behavior of WPF MessageBox shown with SplashScreen – bug?

Suppose we have the following code:

    void App_Startup(object sender, StartupEventArgs args)
    {
        MessageBox.Show("something");
    }

which is called when the App starts:

    <Application x:Class="AppClass.App"
                 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                 Startup="App_Startup"
                 StartupUri="MainWindow.xaml">
        <Application.Resources>
        </Application.Resources>
    </Application>

When I run it without SplashScreen, it runs as expected (i.e. waits for clicking OK), however when running together with SplashScreen, the message box disappears together with SplashScreen.

Is it a normal behavior or a bug?

Upvotes: 0

Views: 714

Answers (2)

Kurubaran
Kurubaran

Reputation: 8902

Try this,

Second parameter of SplashScreen Show(false, false) method is to specify whether splashscreen should be top most.

void App_Startup(object sender, StartupEventArgs args)
{
   SplashScreen screen = new SplashScreen("SplashImage.png");
   screen.Show(false, false);

   MessageBox.Show("something");

   splashScreen.Close(TimeSpan.FromSeconds(1));
}

Upvotes: 2

Postlagerkarte
Postlagerkarte

Reputation: 7117

This will happen if you display a MessageBox and don't explicitly set the parent. The window will implicitly parent itself off whatever window is currently active (in this case, the splash screen). In the Win32 world if you close a window then all child windows will also be closed. If you explicitly set the MessageBox's parent to another window then you'll be fine.

This has been reported to microsoft here and possible remedies have been discussed here.

Upvotes: 3

Related Questions