C# WPF Keep Window Bottom Right

Asked Aug 01 '17 at 19:16

Active Aug 01 '17 at 19:32

Viewed 203 times

I have a WPF Form with SizeToContent="Height" and only a Listbox in it. During runtime severall items will be added to the ObservableCollection the Listbox is bound to and the Listbox will expand. This works just fine but the problem is that I want to keep the Form in the bottom right corner always.

I added the CollectionChanged Event:

 ((INotifyCollectionChanged)History.ItemsSource).CollectionChanged +=new NotifyCollectionChangedEventHandler(HistoryCollectionChanged);

Snd implemented it the following way:

 private void ClipsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e) {
            var desktopWorkingArea = System.Windows.SystemParameters.WorkArea;
            this.Left = desktopWorkingArea.Right - this.ActualWidth;
            this.Top = desktopWorkingArea.Bottom - this.ActualHeight;
        }

But although the event gets triggered every time, the positioning is always off.

edited Aug 01 '17 at 19:32

Bradley Uffner

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asked Aug 01 '17 at 19:16

Curunir

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Try applying that to the window's `SizeChanged` event instead. – Bradley Uffner Aug 01 '17 at 19:28
You may also have to [adjust](https://stackoverflow.com/questions/6032032/how-do-i-compute-the-non-client-window-size-in-wpf) for the window's "chrome" – Bradley Uffner Aug 01 '17 at 19:29
The window has windowstyle=None so that should not matter – Curunir Aug 01 '17 at 19:57
I forgot to mention that the window is hidden during the adding of the element. – Curunir Aug 01 '17 at 20:03
You may need to queue up the move logic for the next time the window is shown. WPF *may* not update layout information and handle resizing events until the content is shown. – Bradley Uffner Aug 02 '17 at 13:03
@BradleyUffner thanks I will try this out – Curunir Aug 02 '17 at 14:54

C# WPF Keep Window Bottom Right

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