System.Windows.Controls.AutoCompleteBox.OnTextBoxSelectionChanged C# (CSharp) Méthode

        private void OnTextBoxSelectionChanged(object sender, RoutedEventArgs e)
        {
            // If ignoring updates. This happens after text is updated, and 
            // before the PopulateComplete method is called. Required for the 
            // IsTextCompletionEnabled feature.
            if(_ignoreTextSelectionChange)
            {
                return;
            }

            _textSelectionStart = _text.SelectionStart;
        }