Microsoft.Phone.Controls.ListPicker.OnTap C# (CSharp) Method

        protected override void OnTap(System.Windows.Input.GestureEventArgs e)
        {
            if (null == e)
            {
                throw new ArgumentNullException("e");
            }

            if (ListPickerMode == ListPickerMode.Normal)
            {
                if (!IsEnabled)
                {
                    e.Handled = true;
                    return;
                }

                Point p = e.GetPosition((UIElement)e.OriginalSource);
                if (IsValidManipulation(e.OriginalSource, p))
                {
                    if (Open())
                    {
                        e.Handled = true;
                    }
                }
            }
        }
        /// <summary>