WPF - Delete selected item (BitmapImage) from listview - wpf

Question

I have a Listview and for it's ItemsSource I have set CollectionOfCapturedImages (an ObservableCollection) ,an a Button for deleting selected items (BitmapImage) from Listview and also from ObservableCollection and a Label in my MainWindow displaying amount of captured images.
private void addNewImageButton_Click(object sender, RoutedEventArgs e)
{
CameraWindow cWindow = Application.Current.Windows.OfType<CameraWindow>().FirstOrDefault();
RoutedEventArgs newEventArgs = new RoutedEventArgs(Button.ClickEvent);
cWindow.manualCapture.RaiseEvent(newEventArgs);
// ListView.ScrollIntoView(ListView.Items.Count - 1);
}
public ObservableCollection<BitmapImage> CollectionOfCapturedImages { get; } = new ObservableCollection<BitmapImage>();
<ListView x:Name="ListView" ItemsSource="{Binding CollectionOfCapturedImages}" Height="345" Margin="567,10,10,0" VerticalAlignment="Top">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<UniformGrid Columns="1" HorizontalAlignment="Center" VerticalAlignment="Top"/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Vertical">
<Image Source="{Binding}" Height="150" Width="150"/>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
this is how I'm updating my Label in MainWindow. When I'm capturing images there is no problem, Label's content is getting updated.
public Action<int> amountOfCapturedImages;
this.cameraWindow = new CameraWindow(this);
cameraWindow.amountOfCapturedImages += (int count) => {
MwAmountOfImagesLabel.Content = count;
};
and here is my delete button
<Button x:Name="DeleteSelectedImageButton" Click="DeleteSelectedImageButton_Click" Content="Delete Selected Image" HorizontalAlignment="Left" Margin="567,488,0,0" Height="26" VerticalAlignment="Top" Width="145"/>
and this way I'm deleting BitmapImages from Listview
private void DeleteSelectedImageButton_Click(object sender, RoutedEventArgs e)
{
CollectionOfCapturedImages.Remove((BitmapImage)ListView.SelectedItem);
}
but my Label's content is not getting updated when I delete an image from Listview. How could I correctly update my Label's content?

Answer 1

You must remove them from the CollectionOfCapturedImages and bind MwAmountOfImagesLabel => CollectionOfCapturedImages.Count

Answer 2

Get rid of this code:
cameraWindow.amountOfCapturedImages += (int count) => {
MwAmountOfImagesLabel.Content = count;
};
...and simply bind the Content property of the Label the Count property of the ObservableCollection:
<Label Content="{Binding CollectionOfCapturedImages.Count}" />
You should not set the Content property of the Label programmatically somewhere in your code. Just set up the binding in your XAML markup.