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      How to: Load Image Tiles from Bing Maps
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      How to: Customize a Web Request for a Map Web Service
      How to: Cache Image Tiles Locally
      How to: Obtain a Collection of Available Layers in the ResponseCapabilities Event Handler
      How to: Add a Georeferenced Image to a Map
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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

How to: Add a Georeferenced Image to a Map

This example demonstrates how to use a map polygon to display a raster georeferenced image on a map.

Expanded An Image Matches a Map Polygon's Shape

This section describes the case when a Map Control cuts a shape from an image without further geometric transformation.

  • Add a VectorLayer (see VectorLayer) to the MapControl.Layers collection.

  • Assign a MapItemStorage object to the VectorLayer.Data property.

  • Add a MapPolygon object to the storage.

  • Populate the MapPolygon.Points collection with geographical coordinates.

  • Use an ImageBrush (see System.Windows.Media.ImageBrush) object to specify the map polygon's Fill (see MapShapeBase.Fill) property.

  • The System.Windows.Media.ImageBrush.ImageSource property allows you to specify an image.

Expanded Display a Specified Image Area

You can use the System.Windows.Media.TileBrush.Viewbox property to limit the image area shown in the map polygon.

Expanded Apply Transformations to Fit an Image

This section describes the case when an image cannot be displayed in a polygon without geometric transformation.

  • Add a map polygon (see MapPolygon) as you did in the previous section.

  • Use the System.Windows.Media.Brush.RelativeTransform property to apply a group of transformations that adjust an image to the map polygon's shape. The example below uses the following transformations:

    • ScaleTransform (see System.Windows.Media.ScaleTransform)
    • SkewTransform (see System.Windows.Media.SkewTransform)
    • RotateTransform (see System.Windows.Media.RotateTransform)

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