/// <summary>
/// Add a new placemark to the map. The placemark is immediately added so
/// you cannot add a placemark and then make changes to it.
/// </summary>
/// <param name="placemark">The placemark to add.</param>
public void AddPlacemark(Placemark placemark)
{
XmlElement element = null;
element = placemark.KMLPlacemark(this);
if (element != null)
{
kmlDocument.AppendChild(element);
}
}