Set scroll viewer to automatically scroll to the bottom

Question

I Used mytoolkit.extended controls for datagrid, there is datagrid and inside it there is MtListbox. I have set vertical scroll bar to auto, it is working fine but i need an option that whenever scroll bar appears it should go down and show the last item.

Answer 1

ScrollViewer has a property which indicates the vertical size of the area which can be scrolled inside it, called ScrollableHeight.

To alter the offset position within the ScrollViewer, you should utilize the ChangeView method, which causes the ScrollViewer to load a new View based on the offsets and zoom factor specified.

public bool ChangeView(Nullable horizontalOffset, Nullable verticalOffset, Nullable zoomFactor)

Now you can simply utilize it like this:

myScrollViewer.ChangeView(null, myScrollViewer.ScrollableHeight, null);

You will want to make sure that this executes on the UI thread, and to do so you can dispatch the work to the UI thread:

await Windows.ApplicationModel.Core.CoreApplication.MainView.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
    myScrollViewer.ChangeView(null, myScrollViewer.ScrollableHeight, null);
});