DrawingImage Class
.NET Framework 3.0
An ImageSource that uses a Drawing for content.
Namespace: System.Windows.Media
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
System.Windows.Media Namespace
ImageDrawing
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace: http://schemas.microsoft.com/winfx/2006/xaml/presentation
This example shows how to use a Drawing as the Source for an Image control. To display a Drawing with an Image control, use a DrawingImage as the Image control's Source and set the DrawingImage object's DrawingImage.Drawing property to the drawing you want to display.
The following example uses a DrawingImage and an Image control to display a GeometryDrawing. This example produces the following output:
A DrawingImage
using System; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; namespace SDKSample { public class DrawingImageExample : Page { public DrawingImageExample() { // // Create the Geometry to draw. // GeometryGroup ellipses = new GeometryGroup(); ellipses.Children.Add( new EllipseGeometry(new Point(50,50), 45, 20) ); ellipses.Children.Add( new EllipseGeometry(new Point(50, 50), 20, 45) ); // // Create a GeometryDrawing. // GeometryDrawing aGeometryDrawing = new GeometryDrawing(); aGeometryDrawing.Geometry = ellipses; // Paint the drawing with a gradient. aGeometryDrawing.Brush = new LinearGradientBrush( Colors.Blue, Color.FromRgb(204,204,255), new Point(0,0), new Point(1,1)); // Outline the drawing with a solid color. aGeometryDrawing.Pen = new Pen(Brushes.Black, 10); // // Use a DrawingImage and an Image control // to display the drawing. // DrawingImage geometryImage = new DrawingImage(aGeometryDrawing); // Freeze the DrawingImage for performance benefits. geometryImage.Freeze(); Image anImage = new Image(); anImage.Source = geometryImage; anImage.HorizontalAlignment = HorizontalAlignment.Left; // // Place the image inside a border and // add it to the page. // Border exampleBorder = new Border(); exampleBorder.Child = anImage; exampleBorder.BorderBrush = Brushes.Gray; exampleBorder.BorderThickness = new Thickness(1); exampleBorder.HorizontalAlignment = HorizontalAlignment.Left; exampleBorder.VerticalAlignment = VerticalAlignment.Top; exampleBorder.Margin = new Thickness(10); this.Margin = new Thickness(20); this.Background = Brushes.White; this.Content = exampleBorder; } } }
<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:PresentationOptions="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="PresentationOptions" Background="White" Margin="20"> <Border BorderBrush="Gray" BorderThickness="1" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="10"> <!-- This image uses a Drawing object for its source. --> <Image> <Image.Source> <DrawingImage PresentationOptions:Freeze="True"> <DrawingImage.Drawing> <GeometryDrawing> <GeometryDrawing.Geometry> <GeometryGroup> <EllipseGeometry Center="50,50" RadiusX="45" RadiusY="20" /> <EllipseGeometry Center="50,50" RadiusX="20" RadiusY="45" /> </GeometryGroup> </GeometryDrawing.Geometry> <GeometryDrawing.Brush> <LinearGradientBrush> <GradientStop Offset="0.0" Color="Blue" /> <GradientStop Offset="1.0" Color="#CCCCFF" /> </LinearGradientBrush> </GeometryDrawing.Brush> <GeometryDrawing.Pen> <Pen Thickness="10" Brush="Black" /> </GeometryDrawing.Pen> </GeometryDrawing> </DrawingImage.Drawing> </DrawingImage> </Image.Source> </Image> </Border> </Page>
- MediaPermission to display images that you have WebPermission or FileIOPermission access for. Associated enumeration: MediaPermissionImage.SiteOfOriginImage.
- MediaPermission to display images that you don't have WebPermission or FileIOPermission access for. Associated enumeration: MediaPermissionImage.SafeImage.
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Reference
DrawingImage MembersSystem.Windows.Media Namespace
ImageDrawing
Other Resources
Drawing Objects OverviewCommunity Additions
ADD
Show: