Thanks, it works fine

Try this:

private void XamChart_Loaded(object sender, RoutedEventArgs e)
        {
            theChart.IsTabStop = false;
            foreach (var child in 
                theChart.VisualChildren()
                .OfType()
                .Where((c) => c.IsTabStop))
            {
                child.IsTabStop = false;
            }
        }

Given this:

public static class Helper
    {
        public static IEnumerable VisualChildren(
            this DependencyObject parent)
        {
            for (int i = 0;
                i < VisualTreeHelper.GetChildrenCount(parent);
                i++)
            {
                var child = VisualTreeHelper.GetChild(parent, i);
                yield return child;
                foreach (var subChild in child.VisualChildren())
                {
                    yield return subChild;
                }
            }
        }
    }

Hope this helps!

-Graham 

Hi Graham,

I'm not sure to understand you..., I try to obtain the children collection from the chart, but it's empty.

I try this line, and the enumerator "childrens" has no elements:

System.Collections.

.GetChildren(chtSample).GetEnumerator();

Thanks for your help

I'm not sure you can get at that control through any of the public properties. You may just want to traverse the Logical Tree using LogicalTreeHelper and set all the logical children (and their children, recursively) of XamChart to IsTabStop=false

Hi Graham,

I just test your solution and solved the problem partially. Now, there's only one control capturing the focus, this control is a unknown control (without name) of type "Infragistics.Windows.Chart.Chart".

How can I access to this control to disable TAB stop?

Thanks a lot