public void PushNewTab(Page Content)
{
TabItem tab = AppResources.CloneXaml <TabItem>(TabDeclarationCached);
(tab.Content as Frame).Content = Content;
var closeButton = (((tab.Header as Border).Child as DockPanel).Children[0] as Button);
var title = (((tab.Header as Border).Child as DockPanel).Children[1] as TextBlock);
title.Text = Content.Title;
(tab.Content as Frame).Tag = tab;
(tab.Content as Frame).Navigating += MainWindow_Navigating;
closeButton.Tag = tab;
closeButton.Click += CloseButtonClick;
TabSwitcher.Items.Insert(TabSwitcher.Items.Count - 1, tab);
int x = TabSwitcher.Items.Count - 1;
Dispatcher.BeginInvoke((Action)(() => TabSwitcher.SelectedItem = tab));
}
public MainWindow()
{
InitializeComponent();
ApplicationMainWindow = this;
TabDeclarationCached = AppResources.XamlToString(TabSwitcher.Items[0] as TabItem);
}