public static ILayer Clone(this ILayer layer)
{
if (layer is IPersistStream)
{
IObjectCopy objectCopy = new ObjectCopyClass();
object clone = objectCopy.Copy(layer);
ILayer layerClone = clone as ILayer;
return(layerClone);
}
if (layer is IPersistVariant)
{
// Create an XML Stream
IXMLStream xmlStream = new XMLStreamClass();
IVariantStreamIO variantStreamIO = new VariantStreamIOClass()
{
Stream = (IStream)xmlStream
};
// Save Layer to Stream
IVariantStream variantStream = (IVariantStream)variantStreamIO;
IPersistVariant save = (IPersistVariant)layer;
save.Save(variantStream);
// Move Seek Pointer to beginning of Stream
xmlStream.Reset();
// Create New Layer
ILayer newlayer = null;
if (layer is IImageServerLayer)
{
newlayer = new ImageServerLayerClass();
}
if (newlayer == null)
{
return(null);
}
// Create new Layer
IPersistVariant load = (IPersistVariant)newlayer;
load.Load(variantStream);
// Return Cloned Layer
return(newlayer);
}
return(null);
}
public static ILayer Clone(this ILayer layer)
{
if (layer is IPersistStream) {
IObjectCopy objectCopy = new ObjectCopyClass();
object clone = objectCopy.Copy(layer);
ILayer layerClone = clone as ILayer;
return layerClone;
}
if (layer is IPersistVariant) {
// Create an XML Stream
IXMLStream xmlStream = new XMLStreamClass();
IVariantStreamIO variantStreamIO = new VariantStreamIOClass() {
Stream = (IStream)xmlStream
};
// Save Layer to Stream
IVariantStream variantStream = (IVariantStream)variantStreamIO;
IPersistVariant save = (IPersistVariant)layer;
save.Save(variantStream);
// Move Seek Pointer to beginning of Stream
xmlStream.Reset();
// Create New Layer
ILayer newlayer = null;
if (layer is IImageServerLayer) {
newlayer = new ImageServerLayerClass();
}
if (newlayer == null) { return null; }
// Create new Layer
IPersistVariant load = (IPersistVariant)newlayer;
load.Load(variantStream);
// Return Cloned Layer
return newlayer;
}
return null;
}
