This documentation is archived and is not being maintained.

ImageDrawing.Rect Property

Gets or set the region in which the image is drawn.

Namespace: System.Windows.Media
Assembly: PresentationCore (in presentationcore.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public Rect Rect { get; set; }
/** @property */
public Rect get_Rect ()

/** @property */
public void set_Rect (Rect value)

public function get Rect () : Rect

public function set Rect (value : Rect)

<object>
  <object.Rect>
    <Rect .../>
  </object.Rect>
</object>
<object Rect="Rect" .../>

Property Value

The region in which the image is drawn. The default is Empty.

Identifier Field

RectProperty

Metadata Flags

None

This example shows how to use an ImageDrawing to draw an image. An ImageDrawing enables you display an ImageSource with a DrawingBrush, DrawingImage, or Visual. To draw an image, you create an ImageDrawing and set its ImageDrawing.ImageSource and ImageDrawing.Rect properties. The ImageDrawing.ImageSource property specifies the image to draw, and the ImageDrawing.Rect property specifies the position and size of each image.

The following example creates a composite drawing using four ImageDrawing objects. This example produces the following image:

Four ImageDrawing objects


Several DrawingImage objects
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Media.Imaging;

namespace SDKSample
{
    public class ImageDrawingExample : Page
    {
        public ImageDrawingExample()
        {
            // Create a DrawingGroup to combine the ImageDrawing objects.
            DrawingGroup imageDrawings = new DrawingGroup();

            // Create a 100 by 100 image with an upper-left point of (75,75). 
            ImageDrawing bigKiwi = new ImageDrawing();
            bigKiwi.Rect = new Rect(75, 75, 100, 100);
            bigKiwi.ImageSource = new BitmapImage(
                new Uri(@"sampleImages\kiwi.png", UriKind.Relative));
            
            imageDrawings.Children.Add(bigKiwi);
            
            // Create a 25 by 25 image with an upper-left point of (0,150). 
            ImageDrawing smallKiwi1 = new ImageDrawing();
            smallKiwi1.Rect = new Rect(0, 150, 25, 25);
            smallKiwi1.ImageSource = new BitmapImage(new Uri(@"sampleImages\kiwi.png", UriKind.Relative));
            imageDrawings.Children.Add(smallKiwi1);

            // Create a 25 by 25 image with an upper-left point of (150,0). 
            ImageDrawing smallKiwi2 = new ImageDrawing();
            smallKiwi2.Rect = new Rect(150, 0, 25, 25);
            smallKiwi2.ImageSource = new BitmapImage(new Uri(@"sampleImages\kiwi.png", UriKind.Relative));
            imageDrawings.Children.Add(smallKiwi2);

            // Create a 75 by 75 image with an upper-left point of (0,0). 
            ImageDrawing wholeKiwi = new ImageDrawing();
            wholeKiwi.Rect = new Rect(0, 0, 75, 75);
            wholeKiwi.ImageSource = new BitmapImage(new Uri(@"sampleImages\wholekiwi.png", UriKind.Relative));
            imageDrawings.Children.Add(wholeKiwi);

            //
            // Use a DrawingImage and an Image control to
            // display the drawings.
            //
            DrawingImage drawingImageSource = new DrawingImage(imageDrawings);
            
            // Freeze the DrawingImage for performance benefits.
            drawingImageSource.Freeze();

            Image imageControl = new Image();
            imageControl.Stretch = Stretch.None;
            imageControl.Source = drawingImageSource;

            // Create a border to contain the Image control.
            Border imageBorder = new Border();
            imageBorder.BorderBrush = Brushes.Gray;
            imageBorder.BorderThickness = new Thickness(1);
            imageBorder.HorizontalAlignment = HorizontalAlignment.Left;
            imageBorder.VerticalAlignment = VerticalAlignment.Top;
            imageBorder.Margin = new Thickness(20);
            imageBorder.Child = imageControl;

            this.Background = Brushes.White;
            this.Margin = new Thickness(20);
            this.Content = imageBorder;
        }

    }
}

<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="20">
    <Image Stretch="None">
      <Image.Source>
        <DrawingImage PresentationOptions:Freeze="True">
          <DrawingImage.Drawing>
            <DrawingGroup>

              <!-- The Rect property specifies that the image only fill a 100 by 100
                   rectangular area. -->
              <ImageDrawing Rect="75,75,100,100" ImageSource="sampleImages\kiwi.png"/>

              <!-- This image is set to fill a 25 by 25 rectangular area. -->
              <ImageDrawing Rect="0,150,25,25" ImageSource="sampleImages\kiwi.png"/>

              <!-- This image is set to fill a 25 by 25 rectangular area. -->
              <ImageDrawing Rect="150,0,25,25" ImageSource="sampleImages\kiwi.png"/>

              <!-- This image is set to fill a 75 by 75 rectangular area. -->
              <ImageDrawing Rect="0,0,75,75" ImageSource="sampleImages\wholekiwi.png"/>

            </DrawingGroup>
          </DrawingImage.Drawing>
        </DrawingImage>
      </Image.Source>
    </Image>
  </Border>
</Page>

For an example showing a simple way to display an image without using ImageDrawing, see How to: Use the Image Element.

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.

.NET Framework

Supported in: 3.0
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