Add a polygon to the Silverlight Bing Map


In this article we will be seeing how to add a polygon on top of the Silverlight Bing Map.

Refer this Article  for creating Silverlight Bing Map Control.

MapPolygon:

The MapPolygon class accepts a list of points that define its shape and location on the map.

MapPolygon class is used to represent a polygon on the map.

Namespace: Microsoft.Maps.MapControl

Assembly: Microsoft.Maps.MapControl (in microsoft.maps.mapcontrol.dll)

Create Silverlight application:

  • Open Visual Studio 2010.
  • Go to File => New => Project.
  • Select Silverlight Application from the installed templates Silverlight.

    BingSilver1.gif
     
  • Enter the Name and click on Ok.
  • Click OK.
  • Go to C:\Program Files (x86)\Bing Maps Silverlight Control\V1\Libraries\ (Check the path where you have installed Bing Maps Silverlight Control).
  • Add the following assemblies to the project.

    o Microsoft.Maps.MapControl.Common.dll
    o Microsoft.Maps.MapControl.dll
     
  • Replace MainPage.xaml with the following code

    <UserControl x:Class="SilverlightMapControl.MainPage"
        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:map="clr-namespace:Microsoft.Maps.MapControl;assembly=Microsoft.Maps.MapControl"
        mc:Ignorable="d"
        d:DesignHeight="300" d:DesignWidth="400">
       
    <Grid x:Name="LayoutRoot" Background="White">       
           
    <Grid.RowDefinitions>
                <RowDefinition Height="35" />
                <RowDefinition Height="*" />
            </Grid.RowDefinitions>
            <Button x:Name="btnCreatePolygon" Width="100" Height="25" Content="Create Polygon" HorizontalAlignment="Left" Tag="false"
                    Click="btnCreatePolygon_Click"></Button>
            <map:Map x:Name="MapWithPolygon" CredentialsProvider="your key" Mode="Road" Grid.Row="1" Grid.ColumnSpan="2">
            </map:Map>       
       
    </Grid>
    </
    UserControl>
     
  • Add the following in MainPage.xaml.cs.

    private void btnCreatePolygon_Click(object sender, RoutedEventArgs e)
            {
                MapPolygon polygon = new MapPolygon();
                polygon.Fill = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Colors.Gray);
                polygon.Stroke = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Colors.Black);
                polygon.StrokeThickness = 1;
                polygon.Opacity = 0.7;
                polygon.Locations = new LocationCollection() {
                new Location(15,-15),
                new Location(15,15),
                new Location(-15,15),
                new Location(-15,-15)};
                MapWithPolygon.Children.Add(polygon);
            }

     
  • Build the solution.
  • Hit F5.
  • The output looks like the following

    BingSilver2.gif

Location:

Contains the altitude and coordinate values of a location on the map.

Fill:

It is used to get or set the fill of the shape.

Opacity:

It is used to get or set the opacity of the shape.

Stroke:

It is used to get or set the stroke color of the shape.

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