How do I remove minimize and maximize from a resizable window in WPF?

internal static class WindowExtensions
{
    [DllImport("user32.dll")]
    internal extern static int SetWindowLong(IntPtr hwnd, int index, int value);

    [DllImport("user32.dll")]
    internal extern static int GetWindowLong(IntPtr hwnd, int index);

    internal static void HideMinimizeAndMaximizeButtons(this Window window)
    {
        const int GWL_STYLE = -16;

        IntPtr hwnd = new System.Windows.Interop.WindowInteropHelper(window).Handle;
        long value = GetWindowLong(hwnd, GWL_STYLE);

        SetWindowLong(hwnd, GWL_STYLE, (int)(value & -131073 & -65537));

    }
}

this.SourceInitialized += (x, y) =>
{
    this.HideMinimizeAndMaximizeButtons();
};

<Window x:Class="DataBinding.MyWindow" ...Title="MyWindow" Height="300" Width="300"
    WindowStyle="ToolWindow" ResizeMode="CanResizeWithGrip">

<Window x:Class="Example"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Example"
        StateChanged="Window_StateChanged">

// Disable maximizing this window
private void Window_StateChanged(object sender, EventArgs e)
{
    if (this.WindowState == WindowState.Maximized)
        this.WindowState = WindowState.Normal;
}