ArcObjects Library Reference  (Carto)    

ILayerExtensions Interface

Provides access to the extensions of a layer.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Members

Description
Method AddExtension Adds a new extension.
Read-only property Extension The extension at the specified index.
Read-only property ExtensionCount Number of extensions.
Method RemoveExtension Removes the specified extension.

CoClasses that implement ILayerExtensions

CoClasses and Classes Description
CadAnnotationLayer An ESRI Cad annotation layer.
CadastralFabricLayer Cadastral Fabric Layer Object.
CadFeatureLayer ESRI CAD Feature Layer class.
CadLayer ESRI CAD Layer class.
CoverageAnnotationLayer An ESRI coverage annotation layer.
DimensionLayer A collection of properties for a dimension layer.
FDOGraphicsLayer A collection of properties for an annotation layer (feature data object graphics layer).
FeatureLayer A collection of features and their visual representation.
ForceElementLayer (esriDefenseSolutions) A custom layer, bound to a feature layer, that wraps a force element display list and makes it possible to view and manipulate its cached graphic contents in an ArcGIS map display.
GdbRasterCatalogLayer Geodabase RasterCatalog source and display options.
GlobeGraphicsLayer (esriGlobeCore) The Globe Graphics Layer.
GlobeLayer (esriGlobeCore) The cache-only globe layer.
GlobeServerLayer (esriGlobeCore) Provides programmatic access to a globe server layer.
GraphicsLayer3D (esri3DAnalyst) A 3D Graphics Layer.
GroupLayer A collection of layers that behaves like a single layer.
ImageServerLayer Image server layer source and display options.
IMSMapLayer A container for the display and manipulation of IMS layers.
KmlLayer (esriGlobeCore) ESRI KML Layer class.
MADtedLayer (esriDefenseSolutions) A layer used to control the display of MA DTED Catalogs.
MapServerLayer Provides programmatic access to a map server layer.
MARasterLayer (esriDefenseSolutions) A layer used to control the display of MA RPF Catalogs.
NALayer (esriNetworkAnalyst) The layer for defining, solving, and viewing network analysis results.
NetworkLayer ESRI Network Layer CoClass.
ProcessLayer (esriGeoprocessing) A collection of process layers that behaves like a single layer.
RasterCatalogLayer Raster catalog source and display options.
RasterLayer Raster layer source and display options.
TacticalGraphicLayer (esriDefenseSolutions) A custom layer, bound to a feature layer, that wraps a tactical graphic display list and makes it possible to view and manipulate its cached graphic contents in an ArcGIS map display.
TemporalFeatureLayer (esriTrackingAnalyst) Defines the coclass IDL parameters and attributes of the TemporalFeatureLayer COM object.
TerrainLayer The Terrain Layer class.
TinLayer The TIN Layer class.
WCSLayer WCS layer source and display options.
WMSMapLayer A container for the display and manipulation of WMS layers.

Remarks

Use this interface to manage a layer's extensions. Extensions extend a layer's behavior.

There are several ESRI layer extensions. One set implements ILayerExtensionDraw. These coclasses store information that is used to display linearly referenced data layers. Another set of ESRI layer extensions implement IDataLayerExtension. These coclasses store information that is used to display 3D data layers in ArcScene and ArcGlobe. Another set implements IFeatureLayerSourcePageExtension. These coclasses control special dialogs for setting a feature layer's data source.  Layer extensions need to implement IPersistStream to be persisted in the layer/map.