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Displaying a Custom Dialog in WPF Before the Main Application Window is Shown

, 27 Feb 2010
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In a WPF application, the first window opened is deemed to be the main window. In order to prevent an application from closing when an initial dialog is closed, use the Application.Current.ShutdownMode property as demonstrated in the following example:protected override void...
In a WPF application, the first window opened is deemed to be the main window. In order to prevent an application from closing when an initial dialog is closed, use the Application.Current.ShutdownMode property as demonstrated in the following example:
 
protected override void OnStartup(StartupEventArgs e)
 {
            Application.Current.ShutdownMode = ShutdownMode.OnExplicitShutdown;
            CustomDialog dialog = new CustomDialog ();
            bool? dialogResult = auth.ShowDialog();
            /* Handle results */
            if (dialogResult.HasValue && dialogResult.Value)
            {
                base.OnStartup(e);
            }
            else
            {
                this.Shutdown();
            }
}

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Daniel Vaughan
President Outcoder
Switzerland Switzerland
Daniel Vaughan is a Microsoft MVP and cofounder of Outcoder, a Swiss software and consulting company dedicated to creating best-of-breed user experiences and leading-edge back-end solutions, using the Microsoft stack of technologies--in particular WPF, WinRT, and Windows Phone.
 
Daniel is the author of Windows Phone 7.5 Unleashed and Windows Phone 8 Unleashed, both published by SAMS.
 
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Web03 | 2.8.140814.1 | Last Updated 27 Feb 2010
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