/// <summary>
        /// Constructor for the Application object.
        /// </summary>
        public App()
        {
            // Global handler for uncaught exceptions. 
            UnhandledException += Application_UnhandledException;

            // Standard Silverlight initialization
            InitializeComponent();

            // Phone-specific initialization
            InitializePhoneApplication();

            
            // Show graphics profiling information while debugging.
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // Display the current frame rate counters.
                Application.Current.Host.Settings.EnableFrameRateCounter = false;

                // 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;

                // Disable the application idle detection by setting the UserIdleDetectionMode property of the
                // application's PhoneApplicationService object to Disabled.
                // 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;
            }

            // Specify the local database connection string
            string DBConnectionString = "Data Source=isostore:/Clients.sdf";

            // Create the database if it does not exist
            using (DataContextClass db = new DataContextClass(DBConnectionString))
            {
                if(db.DatabaseExists() == false)
                {
                    // Create the local database
                    db.CreateDatabase();

                    db.SubmitChanges();
                }
            }

            // Create the ViewModel Object
            viewModel = new ViewModelClass(DBConnectionString);

            // Query the local database and load observable collections
            viewModel.LoadCollectionsFromDatabase();

        }
 // Class constructor, create the data context object
 public ViewModelClass(string clientInfoDBConnectionString)
 {
     clientInfoDB = new DataContextClass(clientInfoDBConnectionString);
 }