Esempio n. 1
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        /// <summary>
        /// Constructor for the Application object.
        /// </summary>
        public App()
        {
            //specify the local database connection string
            string DBConnectionString = "Data Source=isostore:/AllWeight.sdf";

            //create the database if it does not exist
            using (allWeightDataContext db = new allWeightDataContext(DBConnectionString))
            {
                if (db.DatabaseExists() == false)
                {
                    db.CreateDatabase();
                    db.SubmitChanges();
                }
            }
            //create the view model object
            viewModel = new allWeightViewModel(DBConnectionString);

            //query the local database and load the collections
            viewModel.LoadEntriesFromDatabase();

            // Global handler for uncaught exceptions.
            UnhandledException += Application_UnhandledException;

            // Standard XAML initialization
            InitializeComponent();

            // Phone-specific initialization
            InitializePhoneApplication();

            // Language display initialization
            InitializeLanguage();

            // Show graphics profiling information while debugging.
            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;
            }
        }
 //class constructor , creat the data context object here
 public allWeightViewModel(string allWeightConnectionString)
 {
     allWeightDB = new allWeightDataContext(allWeightConnectionString);
     _isloaded = false;
 }