How to hide the NavigationButton of TabNavigationItem in TabNavigationControl?

<Window x:Class="WpfApplication6.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
Title="MainWindow" Height="350" Width="525">
<Grid x:Name="Grid1">
<syncfusion:TabNavigationControl x:Name="Navigationcontrol" NavigationButtonVisibility="Collapsed">
<syncfusion:TabNavigationItem Header="TabItem1"/>
<syncfusion:TabNavigationItem Header="TabItem2"/>
<syncfusion:TabNavigationItem Header="TabItem3"/>
<syncfusion:TabNavigationItem Header="TabItem4"/>
<syncfusion:TabNavigationItem Header="TabItem5"/>
</syncfusion:TabNavigationControl>
</Grid>
</Window>
 

using Syncfusion.Windows.Tools.Controls;
namespace WpfApplication6
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
TabNavigationControl navigationcontrol = new TabNavigationControl();
navigationcontrol.NavigationButtonVisibility = Visibility.Collapsed;
TabNavigationItem Navigationitem1 = new TabNavigationItem();
Navigationitem1.Header = "Item1";
TabNavigationItem Navigationitem2 = new TabNavigationItem();
Navigationitem2.Header = "Item2";
TabNavigationItem Navigationitem3 = new TabNavigationItem();
Navigationitem3.Header = "Item3";
TabNavigationItem NavigationItem4 = new TabNavigationItem();
NavigationItem4.Header = "Item4";
TabNavigationItem NavigationItem5 = new TabNavigationItem();
NavigationItem5.Header = "Item5";
}
}
}