MapGetMap Method (Boolean, MapProgress, Boolean)

public Image GetMap(
	bool isAsync,
	MapProgress progressDelegate,
	out bool done
)

Public Function GetMap ( 
	isAsync As Boolean,
	progressDelegate As MapProgress,
	<OutAttribute> ByRef done As Boolean
) As Image

private static ManualResetEvent m_mre = new ManualResetEvent(false);

private static int m_imageId = 0;

public static void TestAsyncGSMap() {
    // asynchronous maps are only used when fetching from GeoStream
    Repository.Default = new GeoStreamRepository(...);

    Map map = new Map(new LatLon(34, -118), 600, 600, 10);

    int imageId = m_imageId++;
    bool done;

    // call GetMap with isAsync set to true. MapProgress is our callback
    Image image = new Bitmap(map.GetMap(true, MapProgress, out done));

    // we are saving the map image, even if it is incomplete
    image.Save(string.Format(@"C:\Users\User\Documents\AsyncMap\{0}.bmp", imageId));

    // done indicates whether the entire map was returned.
    // Block the current thread if we do not have a complete map.
    if (!done) {
        m_mre.WaitOne();
    }
}

// MapProgress is our callback -- it is called whenever more tiles are available
public static void MapProgress(IMap caller, bool isComplete) {

    int imageId = m_imageId++;
    bool done;

    // Inside our callback, call GetMap again to fetch the updated map image.
    // Pass in this callback so that we can be called recursively 
    // when more tiles are available.
    Image image = new Bitmap(caller.GetMap(true, MapProgress, out done));

    image.Save(string.Format(@"C:\Users\User\Documents\AsyncMap\{0}.bmp", imageId));

    // When we are finally called with all tiles, set the ManualResetEvent
    // so that our waiting thread can continue.
    if (done) {
        m_mre.Set();
    }     
}