Building WPF Applications with Self-Tracking Entity Generator - Project Setup

using System;
using System.Windows;
using GalaSoft.MvvmLight;
using GalaSoft.MvvmLight.Messaging;
using SchoolSample.Common;

namespace SchoolSample
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        #region "Private Data"
        private Home homeScreen;
        private CoursePage coursePage;
        private InstructorPage instructorPage;
        private StudentPage studentPage;
        #endregion "Private Data"

        #region "Constructor"

        public MainWindow()
        {
            InitializeComponent();

            // register for RaiseErrorMessage
            AppMessages.RaiseErrorMessage.Register(this, OnRaiseErrorMessage);
            // register for PleaseConfirmMessage
            AppMessages.PleaseConfirmMessage.Register(this, OnPleaseConfirmMessage);
            // register for StatusUpdateMessage
            AppMessages.StatusUpdateMessage.Register(this, OnStatusUpdateMessage);

            if (!ViewModelBase.IsInDesignModeStatic)
            {
                // Use MEF To load the View Model
                DataContext = App.Container.GetExportedValue<ViewModelBase>(
                    ViewModelTypes.MainPageViewModel);
            }
            // set up the current window
            homeScreen = new Home();
            ContentFrame.Navigate(homeScreen);
        }

        #endregion "Constructor"

        #region "Private Event Handler"

        private void Link0_Click(object sender, RoutedEventArgs e)
        {
            if (homeScreen == null) homeScreen = new Home();
            ContentFrame.Navigate(homeScreen);
        }

        private void InstructorLink_Click(object sender, RoutedEventArgs e)
        {
            if (instructorPage == null) instructorPage = new InstructorPage();
            ContentFrame.Navigate(instructorPage);
        }

        private void StudentLink_Click(object sender, RoutedEventArgs e)
        {
            if (studentPage == null) studentPage = new StudentPage();
            ContentFrame.Navigate(studentPage);
        }

        private void CourseLink_Click(object sender, RoutedEventArgs e)
        {
            if (coursePage == null) coursePage = new CoursePage();
            ContentFrame.Navigate(coursePage);
        }
        
        #endregion "Private Event Handler"

        #region "RaiseErrorMessage"

        private void OnRaiseErrorMessage(Exception ex)
        {
            if (ex != null)
            {
                ErrorWindow win = ErrorWindow.CreateNew(ex);
                LayoutRoot.Children.Add(win);
                win.Show();
            }
        }

        #endregion "RaiseErrorMessage"

        #region "PleaseConfirmMessage"

        private static void OnPleaseConfirmMessage(DialogMessage dialogMessage)
        {
            if (dialogMessage != null)
            {
                MessageBoxResult result = MessageBox.Show(dialogMessage.Content,
                    dialogMessage.Caption, dialogMessage.Button);

                dialogMessage.ProcessCallback(result);
            }
        }

        #endregion "PleaseConfirmMessage"

        #region "StatusUpdateMessage"

        private static void OnStatusUpdateMessage(DialogMessage dialogMessage)
        {
            if (dialogMessage != null)
            {
                MessageBoxResult result = MessageBox.Show(dialogMessage.Content,
                    dialogMessage.Caption, dialogMessage.Button);

                dialogMessage.ProcessCallback(result);
            }
        }

        #endregion "StatusUpdateMessage"
    }
}