C#

write the C# windows form based program that allow user conversion of number system

namespace ATAS.Indicators.Technical
{
	using System;
	using System.ComponentModel;
	using System.ComponentModel.DataAnnotations;
	using System.Windows.Media;

	using ATAS.Indicators.Technical.Properties;

	using OFT.Attributes;

	[DisplayName("5.Heiken Ashi Z")]
    [Category("# 1234")]
    public class HeikenAshiz : Indicator
	{
		private readonly CandleDataSeries _candles = new CandleDataSeries("Heiken Ashi Z"){ Visible = true };
		private readonly PaintbarsDataSeries _bars= new PaintbarsDataSeries("Bars Z"){ Visible = false };
		public HeikenAshiz()
		{	
			Panel = IndicatorDataProvider.NewPanel;
			DataSeries[0]= _bars;
			DataSeries.Add(_candles);
		}

		protected override void OnCalculate(int bar, decimal value)
		{
			var candle = GetCandle(bar);
			_bars[bar] = Colors.Transparent;
			if (bar == 0)
			{
				_candles[bar] = new Candle()
				{
					Close = candle.Close,
					High = candle.High,
					Low = candle.Low,
					Open = candle.Open
				};
			}
			else
			{
				var prevCandle = _candles[bar - 1];
				_candles[bar] = new Candle()
				{
					Close = (candle.Open+candle.Close+candle.High+candle.Low)*0.25m,
					High = candle.High,
					Low = candle.Low,
					Open = (prevCandle.Open+ prevCandle.Close)*0.5m,
				};
			}
			
		}
        protected override void OnApplyDefaultColors()
        {
            if (ChartInfo is null)
                return;

            _candles.UpCandleColor = Color.FromRgb(14, 203, 129);
            _candles.DownCandleColor = Color.FromRgb(246, 70, 93);
            _candles.BorderColor = Color.FromRgb(127, 127, 127);
        }
    }
}