ArcObjects Library Reference (EditorExt)  

IMapTopology.AddClass Method

Adds a feature class to this map topology. All existing topology elements will become invalid.

[Visual Basic .NET]
Public Sub AddClass ( _
    ByVal fclass As IFeatureClass _
)
[C#]
public void AddClass (
    IFeatureClass fclass
);

Product Availability

Available with ArcGIS Desktop.

Remarks

Use AddClass to append additional editable feature classes to the map.  Only classes that implement ITopologyClass can be added to a MapTopology; you should ensure that a FeatureClass you want to add supports this interface.

See Also

IMapTopology Interface