WPF: How to achieve an automatic full screen that

How to achieve an automatic full screen that not hides the taskbar, with no resize and no window style?

I tried to use the following code, but it doesn't work right, as shown in the image below.

XAML:

<Window x:Class="WPF_Test_Environment.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        WindowState="Maximized" ResizeMode="NoResize" WindowStyle="None">
    <DockPanel>
        <Button DockPanel.Dock="Top" Height="50">Top</Button>
        <Button DockPanel.Dock="Bottom" Height="50">Bottom</Button>
        <Button DockPanel.Dock="Left" Width="50">Left</Button>
        <Button DockPanel.Dock="Right" Width="50">Right</Button>
        <Button Width="50" Height="50">Center</Button>
    </DockPanel>
</Window>

Code-Behind:

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        MaxHeight = SystemParameters.MaximizedPrimaryScreenHeight;
        MinHeight = SystemParameters.MaximizedPrimaryScreenHeight;
        MaxWidth = SystemParameters.MaximizedPrimaryScreenWidth;
        MinWidth = SystemParameters.MaximizedPrimaryScreenWidth;
    }
}

Here is the result:

As you can see, the "Bottom" button is partially underneath the taskbar, and I want it to be entirely above it. So, ideally, it would look as shown in the following image, but without the border on the top:

It can be done with calls to unmanaged code. Check this article to see how to do it. Basically, just remove your width and height settings from code-behind, implement the WindowSizing class from the article and call it from SourceInitialized event of the window.

Edit

The other solution would be to add reference to Windows Forms and use:

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    // Set the width and height values to the values of working area
    this.Width = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width;
    this.Height = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height;
    // Move the window to top left corner of the screen
    this.Left = 0;
    this.Top = 0;   
}

Just make sure to remove WindowState="Maximized" from your window.

Not sure if any of these is elegant though.