private void ChangeRenderableSeriesType() { var rSeriesVm = RenderableSeriesViewModels.FirstOrDefault(s => s.IsSelected); if (rSeriesVm != null) { var index = RenderableSeriesViewModels.IndexOf(rSeriesVm); RenderableSeriesViewModels[index] = ViewModelsFactory.New(SelectedSeriesType.Type, 0, RenderableSeriesViewModels[index].DataSeries); RenderableSeriesViewModels[index].IsSelected = true; ZoomExtents(); } }