public RssViewModel(string rssDbConnectionString)
{
_parseRss = new ParseRss(this);
_rssDb = new BaseDataContext(rssDbConnectionString);
_addChannelCommand = new Command(DoAddChanel);
AllArticles = new ObservableCollection<Article>();
NewArticles = new ObservableCollection<Article>();
StaredArticles = new ObservableCollection<Article>();
}
/// <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 (Debugger.IsAttached)
{
// Display the current frame rate counters
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;
// 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;
}
// Create the database if it does not exist.
using (var db = new BaseDataContext(DbConnectionString))
{
if (db.DatabaseExists() == false)
{
// Create the local database.
db.CreateDatabase();
// Save categories to the database.
db.SubmitChanges();
}
}
SaveFilesToIsoStore();
}
/// <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 (Debugger.IsAttached)
{
// Display the current frame rate counters
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;
// 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;
}
// Create the database if it does not exist.
using (var db = new BaseDataContext(DbConnectionString))
{
if (db.DatabaseExists() == false)
{
// Create the local database.
db.CreateDatabase();
// Save categories to the database.
db.SubmitChanges();
// create an instance of DatabaseSchemaUpdater
DatabaseSchemaUpdater schemaUpdater = db.CreateDatabaseSchemaUpdater();
// assign database schema version before calling Execute
schemaUpdater.DatabaseSchemaVersion = 1;
// execute changes to database schema
schemaUpdater.Execute();
}
else
{
// create an instance of DatabaseSchemaUpdater
DatabaseSchemaUpdater schemaUpdater = db.CreateDatabaseSchemaUpdater();
// get current database schema version
// if not changed the version is 0 by default
int version = schemaUpdater.DatabaseSchemaVersion;
// if current version of database schema is old
if (version == 0)
{
// add Address column to the table corresponding to the Person class
schemaUpdater.AddColumn<Channel>("Image");
schemaUpdater.AddColumn<Article>("AddDate");
// IMPORTANT: update database schema version before calling Execute
schemaUpdater.DatabaseSchemaVersion = 1;
// execute changes to database schema
schemaUpdater.Execute();
}
}
}
}
