private void UpdateAcousticLevelData() { var noise = selectedDuctElement.Noise(); var attenuation = selectedDuctElement.Attenuation(); for (int i = 0; i < noise.Count(); i++) { NoiseLevelList[i] = new KeyValuePair <int, double>(i, Math.Round(noise[i], 1, MidpointRounding.AwayFromZero)); AttenuationLevelList[i] = new KeyValuePair <int, double>(i, Math.Round(attenuation[i], 1, MidpointRounding.AwayFromZero)); } }