messagebox on top of splashscreen

Question

I have a messagebox that pops-up when a user can't be loaded (in this case because he don't have a warehouse) while loading there is a splashscreen that shows that the data is being loaded. I tried the TopMost set to true, but yeah the spalshscreen isn't the parent so it don't work, so i tried TopLevel set to true but it didn't do the trick.

So i tried:

MessageBox.Show(Splashscreen.LoadingScreen.ActiveForm, e.Message, "No warehouses", MessageBoxButtons.OK, MessageBoxIcon.Error);

but this is cross thread so I get an: InvalidOperationException So is there another way to set the messagebox on top?

Answer 1

Try this it will show your MessageBox at the top of every window currently open.

MessageBox.Show(this,
        "Your text",
        "Settings Needed",
        MessageBoxButtons.YesNo,
        MessageBoxIcon.Question,
        MessageBoxDefaultButton.Button1,
        (MessageBoxOptions)0x40000); // this is MB_TOPMOST flag

This will keep the message box on top of every window because we are passing MB_TOPMOST Value to MessageBoxOptions parameter. You can visit this for more information.

Answer 2

I faced similar issue - my MessageBox get hide behind of SplashScreen. Neither use of "this" adwiced here, nor "new Form" works for my WPF application. However, the construction

MessageBox.Show(msg, errType, MessageBoxButton.OK, 
    MessageBoxImage.Asterisk, reply, MessageBoxOptions.ServiceNotification);

with MessageBoxOptions.ServiceNotification helps, putting MessageBox on top of SplashScreen.