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| ArcObjects Help for .NET developers > ArcObjects namespaces > Carto > ESRI.ArcGIS.Carto > Classes > B > BasemapSubLayer Class (ArcObjects .NET 10.5 SDK) | 
Wrapper for layers in the basemap.
BasemapSubLayer is a non-creatable object. References to non-creatable objects must be obtained through other objects.
| Interfaces | Description | 
|---|---|
| IBasemapSubLayer | Wrapper for layers in the basemap. | 
| ICompositeLayer | Provides access to members that work with a collection of layers that behaves like a single layer. | 
| ICompositeLayer2 | Provides access to members that control whether a layer is expanded in the TOC. | 
| IDataLayer | Provides access to members that control the data source properties of a layer. | 
| IDataLayer2 | Provides access to additional members that control the data source properties of a layer. | 
| IGeoDataset (esriGeoDatabase) | Provides access to members that provide information about a Geographic Dataset. | 
| IIdentify | Provides access to members that identify features. | 
| IIdentify2 | Provides access to members that set the current scale of the display. | 
| ILayer2 | Provides access to additional members that work with all layers. | 
| ILayerGeneralProperties | Provides access to layer general properties. | 
| ILayerInfo | Provides access to members that return layer images. | 
| ILayerSymbologyExtents | Provides access to layer extents based on the symbology. | 
| ILegendInfo | Provides access to members that control legend information provided by a renderer. | 
The BasemapSubLayer is a wrapper around the real internal layer and provides only focused access to the internal properties of the real layer in order to maintain high performance display.