public IReadOnlyDictionary<string,ContingentValue> GetContingentValues()

public void GetPossibleContingentValues(FeatureClass parcels, string zoningFieldName = "Zone")
{
  using (RowBuffer rowBuffer = parcels.CreateRowBuffer())
  {
    IReadOnlyDictionary<FieldGroup, IReadOnlyList<ContingentValue>> possibleZonings = parcels.GetContingentValues(rowBuffer, zoningFieldName);
    IEnumerable<FieldGroup> possibleFieldGroups = possibleZonings.Keys;
    foreach (FieldGroup possibleFieldGroup in possibleFieldGroups)
    {
      IReadOnlyList<ContingentValue> possibleZoningValues = possibleZonings[possibleFieldGroup];
      foreach (ContingentValue possibleZoningValue in possibleZoningValues)
      {
        switch (possibleZoningValue)
        {
          case ContingentCodedValue codedValue:
            string codedValueDomainName = codedValue.Name;
            object codedValueDomainValue = codedValue.CodedValue;
            break;
          case ContingentRangeValue rangeValue:
            object rangeDomainMaxValue = rangeValue.Max;
            object rangeDomainMinValue = rangeValue.Min;
            break;
          case ContingentAnyValue contingentAnyValue:
            // Any value type
            break;
          case ContingentNullValue contingentNullValue:
            // Null value
            break;
        }
      }
    }
  }
}