public class BarChartRendererDefinition : ChartRendererDefinition 

/// <summary>
/// Renders a feature layer using Bar chart symbols to represent data
/// ![bar chart renderer](https://ArcGIS.github.io/arcgis-pro-sdk/images/Renderers/bar-chart.png)
/// </summary>
{
  //Check feature layer name
  //Code works with the USDemographics feature layer available with the ArcGIS Pro SDK Sample data
  var featureLayer = MapView.Active.Map.GetLayersAsFlattenedList().OfType<FeatureLayer>().FirstOrDefault(f => f.Name == "USDemographics");
  if (featureLayer == null)
  {
    MessageBox.Show("This renderer works with the USDemographics feature layer available with the ArcGIS Pro SDK Sample data", "Data missing");
  }
  var chartFields = new List<string>
    {
        "WHITE10",
          "BLACK10",
          "AMERIND10",
          "ASIAN10",
          "HISPPOP10",
          "HAMERIND10",
          "HWHITE10",
          "HASIAN10",
          "HPACIFIC10",
          "HBLACK10",
          "HOTHRACE10"
    };
  //Note: Run within QueuedTask
  BarChartRendererDefinition barChartRendererDefn = new BarChartRendererDefinition()
  {
    ChartFields = chartFields,
    BarWidth = 12,
    BarSpacing = 1,
    MaximumBarLength = 65,
    Orientation = ChartOrientation.Vertical,
    DisplayIn3D = true,
    ShowAxes = true,
    ColorRamp = colorRamp

  };
  //Creates a "Renderer"
  var barChartChartRenderer = featureLayer.CreateRenderer(barChartRendererDefn);

  //Sets the renderer to the feature layer
  featureLayer.SetRenderer(barChartChartRenderer);
}