About Feature Classes

A feature class represents a type of AutoCAD Map 3D object, and corresponds to a single table within the database. For example, the concept of “parcel” is a single feature class. The list of all feature classes within a database is contained within the TBConnection object’s FeatureClasses property. To get a reference to an existing feature class, you can specify the feature id or string name as the index to the collection:

// Get a reference to the feature class named "MyPoint".
Autodesk.Map.IM.Data.FeatureClass MyPointFeatureClass;
MyPointFeatureClass = myConnection.FeatureClasses["MyPoint"];