/// <summary>
/// Adds the given set of layers to the map,
/// ordering each one in turn under all other layers.
/// </summary>
/// <param name="layers">The set of layers to add.</param>
public void AddLayers(IEnumerable <ILayer> layers)
{
if (layers == null)
{
throw new ArgumentNullException("layers");
}
List <String> layerNames = new List <String>(16);
foreach (ILayer layer in layers)
{
if (layer == null)
{
throw new ArgumentException("One of the layers is null.");
}
checkForDuplicateLayerName(layer);
layerNames.Add(layer.LayerName);
}
for (Int32 i = 0; i < layerNames.Count; i++)
{
for (Int32 j = i + 1; j < layerNames.Count; j++)
{
if (String.Compare(layerNames[i], layerNames[j], StringComparison.CurrentCultureIgnoreCase) == 0)
{
throw new ArgumentException("Layers to be added contain a duplicate name: " + layerNames[i]);
}
}
}
lock (Layers.LayersChangeSync)
{
_layers.AddRange(layers);
}
}