FinancialSeriesViewBase.ReductionOptions Property

Gets the settings which relate to price reduction indication within the financial series.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v20.1.dll


public ReductionStockOptions ReductionOptions { get; }
Public ReadOnly Property ReductionOptions As ReductionStockOptions

Property Value

Type Description

A ReductionStockOptions object that contains the price reduction indication settings.


The ReductionOptions property provides access to the settings that define how a price reduction is indicated within a series of the stock and candle stick types. The settings which are available via the ReductionOptions property allow you to define a particular price value (open, close, high or low) which the analysis of the price action is performed by, specify a color to indicate the price reduction and control whether price reductions are indicated within a series.


This example creates a ChartControl with a series of the CandleStickSeriesView type and adds this chart to a form at runtime. Before you proceed with this example, create a Windows Forms Application in Visual Studio and include all necessary assemblies in the References list of your project.

For more information about the features of financial charts, refer to the following help topic: Financial Charting

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraCharts;

namespace CandleStickChart {
    public partial class Form1 : Form {

        private void Form1_Load(object sender, EventArgs e) {
            // Create a new chart.
            ChartControl candlestickChart = new ChartControl();

            // Create a candlestick series.
            Series series1 = new Series("Series 1", ViewType.CandleStick);

            // Bind the series to data.
            series1.DataSource = GetDataPoints();
            series1.SetFinancialDataMembers("Argument", "Low", "High", "Open", "Close");

            // Specify that date-time arguments are expected.
            series1.ArgumentScaleType = ScaleType.DateTime;

            // Add the series to the chart.

            // Customize the series view settings.
            CandleStickSeriesView view = (CandleStickSeriesView)series1.View;

            view.LineThickness = 2;
            view.LevelLineLength = 0.25;

            // Specify the series reduction options.
            view.ReductionOptions.ColorMode = ReductionColorMode.OpenToCloseValue;
            view.ReductionOptions.FillMode = CandleStickFillMode.AlwaysEmpty;
            view.ReductionOptions.Level = StockLevel.Close;
            view.ReductionOptions.Visible = true;

            // Set point colors.
            view.Color = Color.Green;
            view.ReductionOptions.Color = Color.Red;

            // Access the chart's diagram.
            XYDiagram diagram = (XYDiagram)candlestickChart.Diagram;

            // Exclude empty ranges from the X-axis range
            // to avoid gaps in the chart's data.
            diagram.AxisX.DateTimeScaleOptions.SkipRangesWithoutPoints = true;

            // Hide the range without points at the beginning of the y-axis.
            diagram.AxisY.WholeRange.AlwaysShowZeroLevel = false;

            // Hide the legend.
            candlestickChart.Legend.Visibility = DevExpress.Utils.DefaultBoolean.False;

            // Add a title to the chart.
            candlestickChart.Titles.Add(new ChartTitle());
            candlestickChart.Titles[0].Text = "Candlestick Chart";

            // Add the chart to the form.
            candlestickChart.Dock = DockStyle.Fill;

        List<DataPoint> GetDataPoints() {
            List<DataPoint> dataPoints = new List<DataPoint> {
            new DataPoint(DateTime.Now.AddDays(-9), 24.00, 25.00, 25.00, 24.875),
            new DataPoint(DateTime.Now.AddDays(-8), 23.625, 25.125, 24.00, 24.875),
            new DataPoint(DateTime.Now.AddDays(-7), 26.25, 28.25, 26.75, 27.00),
            new DataPoint(DateTime.Now.AddDays(-6), 26.50, 27.875, 26.875, 27.25),

            new DataPoint(DateTime.Now.AddDays(-4), 25.75, 26.875, 26.75, 26.00),
            new DataPoint(DateTime.Now.AddDays(-3), 25.75, 26.75, 26.125, 26.25),
            new DataPoint(DateTime.Now.AddDays(-2), 25.75, 26.375, 26.375, 25.875),
            new DataPoint(DateTime.Now.AddDays(-1), 24.875, 26.125, 26.00, 25.375),
            new DataPoint(DateTime.Now.AddDays(0), 25.125, 26.00, 25.625, 25.75),
            return dataPoints;
    public class DataPoint {
        public DateTime Argument { get; set; }
        public double Low { get; set; }
        public double High { get; set; }
        public double Open { get; set; }
        public double Close { get; set; }
        public DataPoint(DateTime argument, double low, double high, double open, double close) {
            this.Argument = argument;
            this.Low = low;
            this.High = high;
            this.Open = open;
            this.Close = close;
See Also