Drawing-candles-in-the-indicator

QUOTE:
I just want to be able to draw candlesticks for indicators that I will write myself.

CODE:


using WealthLab.Core;
using System;
using System.Drawing;
using WealthLab.Indicators;

namespace WealthLab.Indicators
{
   public class MyStrategy : WealthLab.Backtest.UserStrategyBase
   {
      public override void Execute(BarHistory bars, int idx)
      { 
               
      }
   }
   
   //the VChart indicator
   public class DOMQuantityAskCandles : IndicatorBase
   {
      //parameterless constructor
      public DOMQuantityAskCandles() : base()
      {
      }

      //for code based construction
      public DOMQuantityAskCandles(BarHistory source, PriceComponent pc)
         : base()
      {         
         Parameters[0].Value = source;         
         Parameters[1].Value = pc;
         Populate();
      }

      //static method
      public static DOMQuantityAskCandles Series(BarHistory source, PriceComponent pc)
      {
         string key = CacheKey("DOMQuantityAskCandles", pc);
         if (source.Cache.ContainsKey(key))
            return (DOMQuantityAskCandles)source.Cache[key];
         DOMQuantityAskCandles vchart = new DOMQuantityAskCandles(source, pc);
         source.Cache[key] = vchart;
         return vchart;
      }

      //Name
      public override string Name => "Value Chart";

      //Abbreviation
      public override string Abbreviation => "DOMQuantityAskCandles";

      //description
      public override string HelpDescription => "The Value Charts indicator developed by Mark W. Helweg. Applies a volatility based detrending to the source price component.";

      //pane
      public override string PaneTag => "DOMQuantityAskCandles";

      //access price component used
      public PriceComponent PriceComponent1 => Parameters[1].AsPriceComponent;

      //default color
      public override WLColor DefaultColor => WLColor.Red;      

      //default plot style
      public override PlotStyle DefaultPlotStyle => PlotStyle.BarChart;

      //populate
      public override void Populate()
      {
         //get parameter values
         BarHistory source = Parameters[0].AsBarHistory;
         if (source == null)
            return;
         PriceComponent pc = Parameters[1].AsPriceComponent;

         BarHistory quantityAsk = new BarHistory(Bars);

         TimeSeries o = Bars.NamedSeries["Open Quantity Ask"];
         TimeSeries h = Bars.NamedSeries["High Quantity Ask"];
         TimeSeries l = Bars.NamedSeries["Low Quantity Ask"];
         TimeSeries c = Bars.NamedSeries["Close Quantity Ask"];
         TimeSeries v = Bars.NamedSeries["Vol Quantity Ask"];      

         for (int bar = 0; bar < Bars.Count; bar++)
         {
            quantityAsk.Add(Bars.DateTimes[bar], o[bar], h[bar], l[bar], c[bar], v[bar]);
         }

         MyStrategy sb = new MyStrategy();

         sb.PlotBarHistoryStyle(quantityAsk, "quantityAsk", "Candlestick", WLColor.Red);

         //DrawHeaderText("Quantity Ask", "quantityAsk");



         //set datetimes
         DateTimes = source.DateTimes;
         
      }

      //generate parameters
      protected override void GenerateParameters()
      {
         AddParameter("Source", ParameterType.BarHistory, null);         
         AddParameter("Price Component", ParameterType.PriceComponent, PriceComponent.Close);
      }

      //get corresponding bar chart companion indicator
      public override IndicatorBase GetBarChartCompanion(PriceComponent pc)
      {
         if (PriceComponent1 == pc)
            return this;
         return new DOMQuantityAskCandles(Parameters[0].AsBarHistory, pc);
      }
   }
}

CODE:
         MyStrategy sb = new MyStrategy();

         sb.PlotBarHistoryStyle(quantityAsk, "quantityAsk", "Candlestick", WLColor.Red);

QUOTE:
Please help me to set this default display method in the indicator code.

QUOTE:
I see an issue with plotting the VChart.

CODE:
//default plot style
public override PlotStyle DefaultPlotStyle => PlotStyle.BarChart;

CODE:
         VChart vChart = VChart.Series(bars, 20, PriceComponent.Close);
         PlotIndicatorChartStyle(vChart, WLColor.AliceBlue, 2, true, "Candlestick");