ZipcodePolygonRenderer Class

public class ZipcodePolygonRenderer : IMapRenderer

Public Class ZipcodePolygonRenderer
	Implements IMapRenderer

public MyForm() {
    InitializeComponent();

    // Use a multirepository to ensure that we use the same repository for
    // custom data that we use for the map data.
    SimpleRepository usa = new SimpleRepository(@"..\Data\USA.gbfs");
    SimpleRepository customData = new SimpleRepository(@"..\Data\MyCustomData.gbfs");
    MultiRepository mr = new MultiRepository();
    mr.AddRepository(usa);
    mr.AddRepository(customData);

    // set our current thread to use our MultiRepository
    Repository.CurrentThreadRepository = mr;

    // Create a ZipcodePolygonRenderer to draw the custom data on top of the map data
    ZipcodePolygonRenderer renderer = new ZipCodePolygonRenderer();

    // Set the style of the zipcode polygons by setting the renderer parameters.
    renderer.RequiredRendermodes = RenderMode.Labelling;
    renderer.BorderPen = Pens.Gold;

    // Apply the renderer to the map.
    mapCtrl1.Renderer = renderer;
}