NavigationWindow class: remove navigation bar and maximized NavigationWindow

Hi everybody, excuse me for my English.

I know that manyconversationsweremade ​​for thistype of problem but noneanswer myspecific problem...
I am currently improvinga Wpf Application coded in C # and xamlin Microsoft Visual Studio Express 2012 for Windows Desktop.

I would like to remove the navigation bar at the top of my windowandmaximize it. In myxaml file I do:
<NavigationWindow x:Class="WpfAppTest.MainWindow"                  
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        WindowState="Maximized"
        WindowStyle="None"
        Title="MainWindow" Height="980 " Width="540" Source="Home.xaml" />

Despite WindowState= "Maximized"andWindowStyle="None" the navigation baris still displayed and the window is still small. I followedseveral tutorials that removed the navigation bar, butthey used a Window class. I did sometests on a new project by creating a class Window and I can well maximize and remove the navigation barfrom my window.
But in my case I need to improve an application in progress but the main windowtype isMainWindow<NavigationWindowx:Class = "WpfAppTest.MainWindow"and Ican not change the type of classto return to the Window class.

Indeed the source Source= "Home.xaml" is no longerrecognized after the change Navigation Window to Window. My applicationcontains several pages and I must navigate throughit so I have to keep my"Home" type"page" page:<Pagex:Class = "WpfAppTest.Home".
Do you have any idea where my problem may be?

Thanks you in advance.