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GeometryGroup.Children Property

Gets or sets the GeometryCollection that contains the objects that define this GeometryGroup.

Namespace:  System.Windows.Media
Assembly:  PresentationCore (in PresentationCore.dll)

public GeometryCollection Children { get; set; }
  <GeometryCollection .../>

Property Value

Type: System.Windows.Media.GeometryCollection
A collection containing the children of this GeometryGroup.

Identifier field


Metadata properties set to true


This example shows how to create composite shapes using Geometry objects and display them using a Path element. In the following example, a LineGeometry, EllipseGeometry, and a RectangleGeometry are used with a GeometryGroup to create a composite shape. The geometries are then drawn using a Path element.

<!-- Displays the geometry. --> 
<Path Stroke="Black" StrokeThickness="1" Fill="#CCCCFF">

    <!-- Creates a composite shape from three geometries. -->
    <GeometryGroup FillRule="EvenOdd">
      <LineGeometry StartPoint="10,10" EndPoint="50,30" />
      <EllipseGeometry Center="40,70" RadiusX="30" RadiusY="30" />              
      <RectangleGeometry Rect="30,55 100 30" />

// Create a Path to be drawn to the screen.
Path myPath = new Path();
myPath.Stroke = Brushes.Black;
myPath.StrokeThickness = 1;
SolidColorBrush mySolidColorBrush = new SolidColorBrush();
mySolidColorBrush.Color = Color.FromArgb(255, 204, 204, 255);
myPath.Fill = mySolidColorBrush;

// Create the line geometry to add to the Path
LineGeometry myLineGeometry = new LineGeometry();
myLineGeometry.StartPoint = new Point(10, 10);
myLineGeometry.EndPoint = new Point(50, 30);

// Create the ellipse geometry to add to the Path
EllipseGeometry myEllipseGeometry = new EllipseGeometry();
myEllipseGeometry.Center = new Point(40, 70);
myEllipseGeometry.RadiusX = 30;
myEllipseGeometry.RadiusY = 30;

// Create a rectangle geometry to add to the Path
RectangleGeometry myRectGeometry = new RectangleGeometry();
myRectGeometry.Rect = new Rect(30, 55, 100, 30);

// Add all the geometries to a GeometryGroup.
GeometryGroup myGeometryGroup = new GeometryGroup();

myPath.Data = myGeometryGroup;

// Add path shape to the UI.
StackPanel mainPanel = new StackPanel();
this.Content = mainPanel;

The following illustration shows the shape created in the previous example.

Composite Geometry

A composite geometry created using a GeometryGroup

More complex shapes, such as polygons and shapes with curved segments, may be created using a PathGeometry. For an example showing how to create a shape using a PathGeometry, see How to: Create a Shape by Using a PathGeometry. Although this example renders a shape to the screen using a Path element, Geometry objects may also be used to describe the contents of a GeometryDrawing or a DrawingContext. They may also be used for clipping and hit-testing.

This example is part of larger sample; for the complete sample, see the Geometries Sample.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.