App.xaml.cs

namespace Xxxxxxxx
{
    using System;
    using System.Diagnostics;
    using System.Reflection;
    using System.Windows;
    using System.Windows.Markup;
    using System.Windows.Navigation;
    using Xxxxxxxx.Resources;
    using Microsoft.Phone.Controls;
    using Microsoft.Phone.Shell;
    using Windows.Phone.ApplicationModel;

    public partial class App : Application
    {
        private static Version actualField = null;

        private static bool? isLightThemeField = null;

        private bool phoneApplicationInitialized = false;

        public App()
        {
            this.UnhandledException += this.Application_UnhandledException;

            this.InitializeComponent();

            this.InitializePhoneApplication();

            this.InitializeLanguage();

            if (Debugger.IsAttached)
            {
                // Display the current frame rate counters.
                Application.Current.Host.Settings.EnableFrameRateCounter = true;

                // Show the areas of the app that are being redrawn in each frame.
                ////Application.Current.Host.Settings.EnableRedrawRegions = true;

                // Enable non-production analysis visualization mode,
                // which shows areas of a page that are handed off to GPU with a colored overlay.
                ////Application.Current.Host.Settings.EnableCacheVisualization = true;

                // Prevent the screen from turning off while under the debugger by disabling
                // the application's idle detection.
                // Caution:- Use this under debug mode only. Application that disables user idle detection will continue to run
                // and consume battery power when the user is not using the phone.
                PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
            }
        }

        public static PhoneApplicationFrame RootFrame { get; private set; }

        public static bool IsRunningInLightTheme
        {
            get
            {
                if (isLightThemeField == null)
                {
                    var lightThemeVisibility = (Visibility)Current.Resources["PhoneLightThemeVisibility"];
                    isLightThemeField = lightThemeVisibility == Visibility.Visible;
                }

                return (bool)isLightThemeField;
            }
        }

        public static bool IsRunningInKidsCorner()
        {
            return ApplicationProfile.Modes == ApplicationProfileModes.Alternate;
        }

        public static string FullVersion()
        {
            return Actual().ToString();
        }

        public static string Version()
        {
            return string.Format("{0}.{1}", Actual().Major, Actual().Minor);
        }

        private static Version Actual()
        {
            if (actualField == null)
            {
                actualField = new AssemblyName(Assembly.GetExecutingAssembly().FullName).Version;
            }

            return actualField;
        }

        private void Application_Launching(object sender, LaunchingEventArgs e)
        {
        }

        private void Application_Activated(object sender, ActivatedEventArgs e)
        {
        }

        private void Application_Deactivated(object sender, DeactivatedEventArgs e)
        {
        }

        private void Application_Closing(object sender, ClosingEventArgs e)
        {
        }

        private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            if (Debugger.IsAttached)
            {
                Debugger.Break();
            }
        }

        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            if (Debugger.IsAttached)
            {
                Debugger.Break();
            }
        }

        private void InitializePhoneApplication()
        {
            if (this.phoneApplicationInitialized)
            {
                return;
            }

            ////RootFrame = new PhoneApplicationFrame();
            RootFrame = new TransitionFrame(); // Assuming using toolkit
            RootFrame.Navigated += this.CompleteInitializePhoneApplication;

            RootFrame.NavigationFailed += this.RootFrame_NavigationFailed;

            RootFrame.Navigated += this.CheckForResetNavigation;

            this.phoneApplicationInitialized = true;
        }

        private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
        {
            if (this.RootVisual != RootFrame)
            {
                this.RootVisual = RootFrame;
            }

            RootFrame.Navigated -= this.CompleteInitializePhoneApplication;
        }

        private void CheckForResetNavigation(object sender, NavigationEventArgs e)
        {
            // If the app has received a 'reset' navigation, then we need to check
            // on the next navigation to see if the page stack should be reset
            if (e.NavigationMode == NavigationMode.Reset)
            {
                RootFrame.Navigated += this.ClearBackStackAfterReset;
            }
        }

        private void ClearBackStackAfterReset(object sender, NavigationEventArgs e)
        {
            RootFrame.Navigated -= this.ClearBackStackAfterReset;

            if (e.NavigationMode != NavigationMode.New && e.NavigationMode != NavigationMode.Refresh)
            {
                return;
            }

            // For UI consistency, clear the entire page stack
            while (RootFrame.RemoveBackEntry() != null)
            {
            }
        }

        // Initialize the app's font and flow direction as defined in its localized resource strings.
        //
        // To ensure that the font of your application is aligned with its supported languages and that the
        // FlowDirection for each of those languages follows its traditional direction, ResourceLanguage
        // and ResourceFlowDirection should be initialized in each resx file to match these values with that
        // file's culture. For example:
        //
        // AppResources.es-ES.resx
        //    ResourceLanguage's value should be "es-ES"
        //    ResourceFlowDirection's value should be "LeftToRight"
        //
        // AppResources.ar-SA.resx
        //     ResourceLanguage's value should be "ar-SA"
        //     ResourceFlowDirection's value should be "RightToLeft"
        //
        // For more info on localizing Windows Phone apps see http://go.microsoft.com/fwlink/?LinkId=262072.
        private void InitializeLanguage()
        {
            try
            {
                // Set the font to match the display language defined by the
                // ResourceLanguage resource string for each supported language.
                //
                // Fall back to the font of the neutral language if the Display
                // language of the phone is not supported.
                //
                // If a compiler error is hit then ResourceLanguage is missing from
                // the resource file.
                RootFrame.Language = XmlLanguage.GetLanguage(AppResources.ResourceLanguage);

                // Set the FlowDirection of all elements under the root frame based
                // on the ResourceFlowDirection resource string for each
                // supported language.
                //
                // If a compiler error is hit then ResourceFlowDirection is missing from
                // the resource file.
                var flow = (FlowDirection)Enum.Parse(typeof(FlowDirection), AppResources.ResourceFlowDirection);
                RootFrame.FlowDirection = flow;
            }
            catch
            {
                // If an exception is caught here it is most likely due to either
                // ResourceLangauge not being correctly set to a supported language
                // code or ResourceFlowDirection is set to a value other than LeftToRight
                // or RightToLeft.
                if (Debugger.IsAttached)
                {
                    Debugger.Break();
                }

                throw;
            }
        }
    }
}