private void NotifyPageChanged(int previousPageIndex)
        {
            if (WizardPageLocationChanged == null)
            {
                return;
            }

            var e = new WizardPageLocationChangedEventArgs
            {
                PageLocation      = PageLocation,
                PageIndex         = IndexOf(CurrentPage),
                PreviousPageIndex = previousPageIndex
            };

            WizardPageLocationChanged(e);
        }
 void WizardPages_WizardPageLocationChanged(WizardPageLocationChangedEventArgs e)
 {
     LoadNextPage(e.PageIndex, e.PreviousPageIndex, true);
 }