This .NET enum wraps the ObjectARX AcDb::LayerEvaluation enumeration. 

This enum supports the new API exposure of the LAYEREVAL header variable.

Public Enum LayerEvaluation
  NoNewLayerEvaluation
  EvalNewXrefLayers
  EvalAllNewLayers
End Enum

public enum LayerEvaluation {
  NoNewLayerEvaluation,
  EvalNewXrefLayers,
  EvalAllNewLayers
}