WPF Window Icon

    <Window.Icon>
        <DrawingImage>
            <DrawingImage.Drawing>
                <GeometryDrawing Brush="Orange">
                    <GeometryDrawing.Pen>
                        <Pen Brush="Black" Thickness="10"/>
                    </GeometryDrawing.Pen>
                    <GeometryDrawing.Geometry>
                        <EllipseGeometry RadiusX="100" RadiusY="50"/>
                    </GeometryDrawing.Geometry>
                </GeometryDrawing>
            </DrawingImage.Drawing>
        </DrawingImage>
    </Window.Icon>

 

 

 

 

 

 

 

 

 

<Window x:Class="WpfApp71.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:WpfApp71"
        WindowState="Maximized"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Window.Icon>
        <DrawingImage>
            <DrawingImage.Drawing>
                <GeometryDrawing Brush="Orange">
                    <GeometryDrawing.Pen>
                        <Pen Brush="Black" Thickness="10"/>
                    </GeometryDrawing.Pen>
                    <GeometryDrawing.Geometry>
                        <EllipseGeometry RadiusX="100" RadiusY="50"/>
                    </GeometryDrawing.Geometry>
                </GeometryDrawing>
            </DrawingImage.Drawing>
        </DrawingImage>
    </Window.Icon>
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        
        <Image Grid.Column="0">
            <Image.Source>
                <DrawingImage>
                    <DrawingImage.Drawing>
                        <DrawingGroup>
                            <GeometryDrawing Brush="Orange">
                                <GeometryDrawing.Pen>
                                    <Pen Brush="Black" Thickness="10"/>
                                </GeometryDrawing.Pen>
                                <GeometryDrawing.Geometry>
                                    <EllipseGeometry RadiusX="100" RadiusY="50"/>
                                </GeometryDrawing.Geometry>
                            </GeometryDrawing>
                        </DrawingGroup>
                    </DrawingImage.Drawing>
                </DrawingImage>
            </Image.Source>
        </Image>
        
        <Image Grid.Column="1">
            <Image.Source>
                <DrawingImage>
                    <DrawingImage.Drawing>
                        <DrawingGroup>
                            <GeometryDrawing  Brush="Orange">
                                <GeometryDrawing.Pen>
                                    <Pen Brush="Black" Thickness="10"/>
                                </GeometryDrawing.Pen>
                                <GeometryDrawing.Geometry>
                                    <GeometryGroup>
                                        <PathGeometry FillRule="Nonzero">
                                            <PathFigure IsClosed="True">
                                                <LineSegment Point="0,100" IsSmoothJoin="True"/>
                                                <LineSegment Point="100,100" IsSmoothJoin="True" IsStroked="True"/>
                                            </PathFigure>                                           
                                        </PathGeometry>
                                        <PathGeometry>
                                            <PathFigure StartPoint="70,0" IsClosed="True">
                                                <LineSegment Point="0,100" IsSmoothJoin="True"/>
                                                <LineSegment Point="100,100" IsSmoothJoin="True"/>
                                            </PathFigure>
                                        </PathGeometry>                                        
                                    </GeometryGroup>
                                </GeometryDrawing.Geometry>
                            </GeometryDrawing>
                        </DrawingGroup>
                    </DrawingImage.Drawing>
                </DrawingImage>
            </Image.Source>
        </Image>

        <Image Grid.Column="2">
            <Image.Source>
                <DrawingImage>
                    <DrawingImage.Drawing>
                        <DrawingGroup>
                            <GeometryDrawing x:Name="geoDrawing" Brush="Orange">
                                <GeometryDrawing.Pen>
                                    <Pen Brush="Black" Thickness="10"/>
                                </GeometryDrawing.Pen>
                                <GeometryDrawing.Geometry>
                                    <GeometryGroup>
                                        <PathGeometry FillRule="EvenOdd">
                                            <PathFigure IsClosed="True">
                                                <LineSegment Point="0,100" IsSmoothJoin="True"/>
                                                <LineSegment Point="100,100" IsSmoothJoin="True" IsStroked="True"/>
                                            </PathFigure>
                                        </PathGeometry>
                                        <PathGeometry>
                                            <PathFigure StartPoint="70,0" IsClosed="True">
                                                <LineSegment Point="0,100" IsSmoothJoin="True"/>
                                                <LineSegment Point="100,100" IsSmoothJoin="True"/>
                                            </PathFigure>
                                        </PathGeometry>
                                    </GeometryGroup>
                                </GeometryDrawing.Geometry>
                            </GeometryDrawing>
                        </DrawingGroup>
                    </DrawingImage.Drawing>
                </DrawingImage>
            </Image.Source>
        </Image>       
    </Grid>
</Window>