wpf,binding , WPF: static INotifyPropertyChanged event

WPF: static INotifyPropertyChanged event


Tag: wpf,binding

This is my model:

class Person : INotifyPropertyChanged
    public static int Counter;
    public string _firstName;
    public string _lastName;
    public event PropertyChangedEventHandler PropertyChanged;

   public string FirstName
        get {return _firstname; }
            _fileName = value;

   public AddPerson(Person person)

I have this NotifyPropertyChange that changed all my Persons properties inside my ListView and i want to add the Counter field that hold the number of Objects that i have. So is it possible to add another PropertyChanged Event for my static variable ?


Instead of a static counter you should have a view model with a collection of Person objects

public class ViewModel
    public ObservableCollection<Person> Persons { get; set; }

and bind the ItemsSource property of the ListView to this collection.

<ListView ItemsSource="{Binding Persons}">

You could now bind to the Count property of the collection to get the number of elements:

<TextBlock Text="{Binding Persons.Count}"/>

For further reading see the Binding to Collections section in the Data Binding Overview article on MSDN.


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