very simple ObservableCollection tutorial

an ObservableCollection is a dynamic collection where items can be added, removed or be updated with an automatic notification of actions.
I will demonstrate how this works in a very simple example:
All i have is a window with a Button a TextBox and a ListView and each time you click the Button the text of the Textfield is added to the collection and the ListView gets updated automatically.




Code file:

public partial class Window1 : Window
    {
        private ObservableCollection<String> names = new ObservableCollection<String>();

        public Window1()
        {
            InitializeComponent();
            listView1.ItemsSource = names;
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            names.Add(textBox1.Text);
        }
    }

All you need to do is set the ItemsSource of you ListView to the ObservableCollection with
listView1.ItemsSource = names;
and then add your text with the Add() Method of the ObservableCollection.
names.Add(textBox1.Text);

XAML File:

<Window x:Class="Observablecolection.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <Grid>
        <ListView Margin="138,6,10,8" Name="listView1"/>
        <Button Height="53" HorizontalAlignment="Left" Margin="14,17,0,0" Name="button1" VerticalAlignment="Top" Width="113" Click="button1_Click">Button</Button>
        <TextBox HorizontalAlignment="Left" Margin="12,118,0,110" Name="textBox1" Width="123" />
    </Grid>
</Window>