private async void Place_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
DataPeopleHelper placeHelper = new DataPeopleHelper("places.json");
placeHelper.WriteToFile(new ObservableCollection <Place>()
{
new Place()
{
Name = "Karlstad"
}
});
}
/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used such as when the application is launched to open a specific file.
/// </summary>
/// <param name="e">Details about the launch request and process.</param>
protected async override void OnLaunched(LaunchActivatedEventArgs e)
{
Frame rootFrame = Window.Current.Content as Frame;
DataPeopleHelper helper = new DataPeopleHelper("people.json");
People = await helper.ReadFromFile <ObservableCollection <Person> >();
DataPeopleHelper stringHelper = new DataPeopleHelper("places.json");
ObservableCollection <Place> myPlaces = await stringHelper.ReadFromFile <ObservableCollection <Place> >();
if (People == null)
{
People = new ObservableCollection <Person>()
{
new Person()
{
Name = "", Age = -1
},
new Person()
{
Name = "Robert", Age = 32
},
new Person()
{
Name = "Winston", Age = 30
},
new Person()
{
Name = "Leonard", Age = 40
}
};
}
// or
// do the following
//People = new ObservableCollection<Person>()
//{
// new Person() { Name="", Age=-1 },
// new Person() { Name="Robert", Age=32 },
// new Person() { Name="Winston", Age=30 },
// new Person() { Name="Leonard", Age=40 }
//};
People.CollectionChanged += People_CollectionChanged;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (rootFrame == null)
{
// Create a Frame to act as the navigation context and navigate to the first page
rootFrame = new Frame();
rootFrame.NavigationFailed += OnNavigationFailed;
if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
{
//TODO: Load state from previously suspended application
}
// Place the frame in the current Window
Window.Current.Content = rootFrame;
}
if (e.PrelaunchActivated == false)
{
if (rootFrame.Content == null)
{
// When the navigation stack isn't restored navigate to the first page,
// configuring the new page by passing required information as a navigation
// parameter
rootFrame.Navigate(typeof(MainPage), e.Arguments);
}
// Ensure the current window is active
Window.Current.Activate();
}
}
private async void People_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
DataPeopleHelper helper = new DataPeopleHelper("people.json");
helper.WriteToFile(People);
}