private void OnTabChanged(object sender, SelectionChangedEventArgs e)
{
PageItemViewModel selectedTab = NavControl.SelectedValue as PageItemViewModel;
if (selectedTab == null)
{
return;
}
PageContainer selectedPage = selectedTab.Item.Content as PageContainer;
if (selectedPage != null)
{
//Prevent handling over changing inside tab item
if (currentTab == selectedPage)
{
return;
}
if (currentTab != null)
{
try {
currentTab.OnClose();
} catch (AppDomainUnloadedException) { }
}
currentTab = selectedPage;
currentTab.OnShow();
}
}