How can I determine whether a feature class is a 3D feature class (HasZ)?

Question

I would like to be able to determine whether a feature class passed to a procedure is a 3D feature class (hasZ) or not. How can I do this in VB .Net & ArcObjects?

Answer 1

Check the geometrydef of the Shape field

Dim field as IField
set field = = class.Fields.get_Field(class.Fields.FindField(class.ShapeFieldName))
hasz = field.GeometryDef.HasZ

Answer 2

You can use HasZ on IDEFeatureClass.