This .NET enum wraps the AcDbField::EvalStatus ObjectARX enum. These values specify the evaluation status of the field.

Public Enum FieldEvaluationStatus
  EvaluatorNotFound = 4
  InvalidCode = &H10
  InvalidContext = &H20
  NotYetEvaluated = 1
  OtherError = &H40
  Success = 2
  SyntaxError = 8
End Enum

public enum FieldEvaluationStatus {
  EvaluatorNotFound = 4,
  InvalidCode = 0x10,
  InvalidContext = 0x20,
  NotYetEvaluated = 1,
  OtherError = 0x40,
  Success = 2,
  SyntaxError = 8
}