wpf two way binding not working - wpf

Question

i have
<Grid Name="thisPage">
<TextBlock Name="tbtb" />
<ScrollViewer Name="sv4" Visibility="Hidden">
<ItemsControl ItemsSource="{Binding}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<TextBox Text="{Binding Title, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" TextChanged="TextBox_TextChanged"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
</Grid>
in the MainWindow.vb, i have
movieArray as ObservableCollection(of Movie)
For i As Integer = 0 To 5
Me.movieArray.Add(New Movie(i))
Next
Me.sv4.DataContext = Me.movieArray
Me.listBox5.DataContext = Me.movieArray
Private Sub TextBox_TextChanged(sender As System.Object, e As System.Windows.Controls.TextChangedEventArgs)
Me.tbtb.Text = ""
For Each m As Movie In movieArray
Me.tbtb.Text += p.Title.ToString + " ^ "
Next
End Sub
Class Movie
Implements INotifyPropertyChanged
Public Event PropertyChanged As PropertyChangedEventHandler _
Implements INotifyPropertyChanged.PropertyChanged
Private Sub NotifyPropertyChanged(ByVal info As String)
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info))
End Sub
Property Title As Integer
Get
Return Me._title
End Get
Set(value As Integer)
Me._title = value
If Not (value = _title) Then
Me._title= value
NotifyPropertyChanged("Title")
End If
End Set
End Property
for the next page i have,
<Grid Name="nextPage" Visibility="Hidden" >
<ListBox Name="listBox5" >
<ItemsControl ItemsSource="{Binding}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Title}"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ListBox>
</Grid >
To change pages i just toggle the visibility of thisPage and nextPage using back, next buttons.
IM not sure what im doing wrong as:-
listbox5 shows only the original values, not anything changed by
textboxes.
tbtb, however is able to update its values

Answer 1

I think the problem might be your 'Title' property setter.
I'm a C# guy, not a VB expert... but it would appear that NotifyPropertyChanged will never get called.
value = _title will always be true because you just set Me._title = value in the previous line of code. Thus you will never execute any of the code in your if statement.

Answer 2

Why are you using Textchanged evetn in two way binding you dont need kind of stuff. two way binding is directly bind values from your view to property and from property to view
so don't use textchanged event and try again. this will work.