ChartControl.CrosshairEnabled Property

Gets or sets a value that specifies whether a crosshair cursor is enabled for a chart.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v20.1.UI.dll

Declaration

public DefaultBoolean CrosshairEnabled { get; set; }
Public Property CrosshairEnabled As DefaultBoolean

Property Value

Type Description
DefaultBoolean

Default - a crosshair cursor's state (enabled/disabled) is automatically determined based on the type of diagram currently displayed on a chart; True - a crosshair cursor is enabled for a chart; False - a crosshair cursor is disabled.

Remarks

Use the CrosshairEnabled property to activate (deactivate) the crosshair cursor at the level of a ChartControl. Use the SeriesBase.CrosshairEnabled and Indicator.CrosshairEnabled properties to enable (disable) the crosshair cursor for specific series and indicators.

To customize the crosshair cursor appearance and position options, use the ChartControl.CrosshairOptions property.

The following image shows the enabled crosshair cursor with the CrosshairOptions.ShowArgumentLabels, CrosshairOptions.ShowValueLabels, CrosshairOptions.ShowArgumentLine and CrosshairOptions.ShowValueLine set to true.

CrosshairEnabledForChart

To customize the crosshair cursor label content, use the SeriesBase.CrosshairLabelPattern property for series and the Indicator.CrosshairLabelPattern property — for indicators.

For more information on how to use a crosshair cursor, see the Crosshair Cursor topic.

Examples

This example demonstrates how to enable and customize chart tooltips at runtime.

To enable tooltips, set the ChartControl.ToolTipEnabled property to true.

To learn more on chart tooltips, see the Tooltips topic.

using DevExpress.XtraCharts;
using System;
using System.Windows.Forms;
using DevExpress.Utils;

namespace TooltipCustomization {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e) {
            // Create an empty chart.
            ChartControl chartControl = new ChartControl();

            // Add the chart to the form.
            chartControl.Dock = DockStyle.Fill;
            this.Controls.Add(chartControl);

            // Create a series and add points to it.
            Series series1 = new Series("Series 1", ViewType.Bar);
            series1.Points.Add(new SeriesPoint("A", new double[] { 4 }));
            series1.Points.Add(new SeriesPoint("B", new double[] { 2 }));
            series1.Points.Add(new SeriesPoint("C", new double[] { 17 }));
            series1.Points.Add(new SeriesPoint("D", new double[] { 4 }));
            series1.Points.Add(new SeriesPoint("E", new double[] { 17 }));
            series1.Points.Add(new SeriesPoint("F", new double[] { 12 }));
            series1.Points.Add(new SeriesPoint("G", new double[] { 15 }));

            // Add the series to the chart.
            chartControl.Series.Add(series1);

            // Disable a crosshair cursor.
            chartControl.CrosshairEnabled = DefaultBoolean.False;

            // Enable chart tooltips. 
            chartControl.ToolTipEnabled = DefaultBoolean.True;

            // Show a tooltip's beak
            ToolTipController controller = new ToolTipController();
            chartControl.ToolTipController = controller;
            controller.ShowBeak = true;

            // Change the default tooltip mouse position to relative position.
            ToolTipRelativePosition relativePosition = new ToolTipRelativePosition();
            chartControl.ToolTipOptions.ToolTipPosition = relativePosition;

            // Specify the tooltip relative position offsets.  
            relativePosition.OffsetX = 2;
            relativePosition.OffsetY = 2;

            // Specify the tooltip point pattern.
            series1.ToolTipPointPattern = "Bar Series: {A}:{V}";
        }
    }
}
See Also