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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?

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up vote 4 down vote accepted

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
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Thanks Peter. Could not have been more obvious... – Jakub Nov 16 '10 at 13:48

You can use HasZ on IDEFeatureClass.

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