To use this sample, open a part document open that contains at least one extrusion feature and run the sample. The sketch of the first extrusion feature should not already be shared.
Public Sub MakeSketchShared()
' Set a reference to the part component definition.
' This assumes that a part document is active.
Dim oCompDef As PartComponentDefinition
Set oCompDef = ThisApplication.ActiveDocument.ComponentDefinition
' Get the first extrusion feature in the part.
' This assumes that an extrusion feature exists in the part.
Dim oExtrudeFeature As ExtrudeFeature
Set oExtrudeFeature = oCompDef.Features.ExtrudeFeatures.Item(1)
' Set a reference to the sketch of the feature.
Dim oSketch As PlanarSketch
Set oSketch = oExtrudeFeature.Definition.Profile.Parent
' Share the sketch of the feature.
oSketch.Shared = True
End Sub