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.
  
  
   
• 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
  
  
  

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.