Hexagon window

Window x:Class="HexagonWindow.MainWindow"
            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
            xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
            xmlns:local="clr-namespace:HexagonWindow"
            mc:Ignorable="d"
            Title="Hexa" Height="300" Width="300" WindowStyle="None"
            AllowsTransparency="True" Background="Transparent" MouseLeftButtonDown="Window_MouseLeftButtonDown">
        <Grid>
            <!--Points="100,0 200,0 300,100 300,200 200,300 100,300 0,200 0,100" use these points for octagon window-->
            <Polygon  Points="75,0 225,0 300,150 225,300 75,300 0,150"  Stroke="Red" StrokeThickness="3" Fill="LightBlue"></Polygon>
            <Button Content = "X" Height="20" Width="20" Margin="150,0,0,0" Click="Button_Click" VerticalAlignment="Top"></Button>
            <StackPanel Height="80" Width="240">
                <TextBlock HorizontalAlignment="Center" Margin="5" Height="20" Text="He! I'm a hexagonal window!"></TextBlock>
                <TextBlock HorizontalAlignment="Center" Text="Drag me, by clicking the left mouse button"></TextBlock>
            </StackPanel>
        </Grid>
    </Window>


    using System.Windows;
    using System.Windows.Input;
    
    namespace HexagonWindow
    {
        /// <summary>
        /// Interaction logic for MainWindow.xaml
        /// MainWindow is the hexagon window here
        /// </summary>
        public partial class MainWindow : Window
        {
            public MainWindow()
            {
                InitializeComponent();
            }
    
            private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
            {
                DragMove();
            }
    
            private void Button_Click(object sender, RoutedEventArgs e)
            {
                this.Close();
            }
        }
    }