private async void UpdatePlot(int plotLine) { string date = DateTime.Today.AddDays(Dias).ToString("yyyyMMdd"); if (plotLine == 1) { try { var symbol = myViewModel.GetLineOnePickerValue(); var requestResponse = await MyRequest.SendRequest(date, symbol); LineSeriesOne.Points.Clear(); myViewModel.EmptyPlot(LineSeriesOne); AddSeries(LineSeriesOne, requestResponse.ToString()); } catch (System.NullReferenceException) { return; } } if (plotLine == 2) { try { var symbol = myViewModel.GetLineTwoPickerValue(); var requestResponse = await MyRequest.SendRequest(date, symbol); LineSeriesTwo.Points.Clear(); myViewModel.EmptyPlot(LineSeriesTwo); AddSeries(LineSeriesTwo, requestResponse.ToString()); } catch (System.NullReferenceException) { return; } } else { return; } }