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Add Crosshair

Crosshair has a vertical and horizontal line to view the value of the axis at mouse or touch position.

Crosshair lines can be enabled by using enable property in the crosshair.

tagHelper
crosshair.cs
<ejs-stockchart id="stockchart" load="stockload" title="AAPL Stock Price">
                <e-stockchart-series-collection>
                    <e-stockchart-series type='Candle' xName="x"> </e-stockchart-series>
                </e-stockchart-series-collection>
                 <e-stockchart-crosshairsettings enable="true"></e-stockchart-crosshairsettings>
            </ejs-stockchart>

    <script src="~/scripts/chart/financial-data.js"></script>
    <script>
        var data = chartData;
        function stockload(args) {
            args.stockChart.series[0].dataSource = data;
        }
    </script>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace EJ2CoreSampleBrowser.Controllers.StockChart
{
    public partial class StockChartController : Controller
    {
        public IActionResult Default()
        {
            return View();
        }
    }
}

Tooltip for axis

Tooltip label for an axis can be enabled by using enable property of crosshairTooltip in the corresponding axis.

tagHelper
axis-tooltip.cs
<ejs-stockchart id="stockchart" load="stockload" title="AAPL Stock Price">
                <e-stockchart-series-collection>
                    <e-stockchart-series type='Candle' xName="x"> </e-stockchart-series>
                </e-stockchart-series-collection>
                <e-stockchart-primaryxaxis>
                    <e-majorgridlines color="transparent"></e-majorgridlines>
                    <e-crosshairtooltip enable="true"></e-crosshairtooltip>
                </e-stockchart-primaryxaxis>
                <e-stockchart-primaryyaxis>
                    <e-linestyle color="transparent"></e-linestyle>
                    <e-majorticklines color="transparent" width="0"></e-majorticklines>
                    <e-crosshairtooltip enable="true"></e-crosshairtooltip>
                </e-stockchart-primaryyaxis>
              <e-stockchart-crosshairsettings enable="true"></e-stockchart-crosshairsettings>
            </ejs-stockchart>

    <script src="~/scripts/chart/financial-data.js"></script>
    <script>
        var data = chartData;
        function stockload(args) {
            args.stockChart.series[0].dataSource = data;
    </script>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace EJ2CoreSampleBrowser.Controllers.StockChart
{
    public partial class StockChartController : Controller
    {
        public IActionResult Default()
        {
            return View();
        }
    }
}

Customization

The fill and textStyle property of the crosshairTooltip is used to customize the background color and font style of the crosshair label respectively. Color and width of the crosshair line can be customized by using the line property in the crosshair.

tagHelper
custom.cs
<ejs-stockchart id="stockchart" load="stockload" title="AAPL Stock Price">
                <e-stockchart-series-collection>
                    <e-stockchart-series type='Candle' xName="x"> </e-stockchart-series>
                </e-stockchart-series-collection>
            </ejs-stockchart>

    <script src="~/scripts/chart/financial-data.js"></script>
    <script>
        var data = chartData;
        function stockload(args) {
            args.stockChart.series[0].dataSource = data;
            args.stockChart.crosshair = { enable: true, line: { width: 2, color: 'green' } };
            args.stockChart.primaryYAxis = {
                lineStyle: { color: 'transparent' },
                majorTickLines: { color: 'transparent', width: 0 },
                crosshairTooltip: { enable: true, fill: 'green' }
            };
            args.stockChart.primaryXAxis = {
                majorGridLines: { color: 'transparent' },
                crosshairTooltip: { enable: true, fill: 'green' }
            };
        }
    </script>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace EJ2CoreSampleBrowser.Controllers.StockChart
{
    public partial class StockChartController : Controller
    {
        public IActionResult Default()
        {
            return View();
        }
    }
}

Add Trackball

Trackball is used to track a data point closest to the mouse or touch position. Trackball marker indicates the closest point and trackball tooltip displays the information about the point.

Trackball can be enabled by setting the enable property of the crosshair to true and shared property in tooltip to true in chart.

tagHelper
trackball.cs
<ejs-chart id="container" width="60%" load="window.onload">
        <e-chart-crosshairsettings enable="true" lineType="Vertical">
        </e-chart-crosshairsettings>
        <e-chart-tooltipsettings enable="true" shared="true" format="${series.name} : ${point.x} : ${point.y}">
        </e-chart-tooltipsettings>
        <e-chart-primaryxaxis valueType="DateTime"></e-chart-primaryxaxis>
        <e-series-collection>
            <e-series dataSource="ViewBag.dataSource" xName="xValue" yName="yValue" type="@Syncfusion.EJ2.Charts.ChartSeriesType.Line"></e-series>
            <e-series dataSource="ViewBag.dataSource" xName="xValue" yName="yValue1" type="@Syncfusion.EJ2.Charts.ChartSeriesType.Line"></e-series>
            <e-series dataSource="ViewBag.dataSource" xName="xValue" yName="yValue2" type="@Syncfusion.EJ2.Charts.ChartSeriesType.Line"></e-series>
        </e-series-collection>
    </ejs-chart>
public ActionResult Index()
        {
            List<TrackballChartData> chartData = new List<TrackballChartData>
            {
                new TrackballChartData { xValue = new DateTime(2000, 2, 11), yValue = 14, yValue1 = 39, yValue2 = 60 },
                new TrackballChartData { xValue = new DateTime(2000, 9, 4), yValue = 20, yValue1 = 30, yValue2 = 55 },
                new TrackballChartData { xValue = new DateTime(2001, 2, 11), yValue = 25, yValue1 = 28, yValue2 = 48 },
                new TrackballChartData { xValue = new DateTime(2001, 9, 16), yValue = 21, yValue1 = 35, yValue2 = 57 },
                new TrackballChartData { xValue = new DateTime(2002, 2, 7), yValue = 13, yValue1 = 39, yValue2 = 62 },
                new TrackballChartData { xValue = new DateTime(2002, 9, 7), yValue = 18, yValue1 = 41, yValue2 = 64 },
                new TrackballChartData { xValue = new DateTime(2003, 2, 11), yValue = 24, yValue1 = 45, yValue2 = 57 },
                new TrackballChartData { xValue = new DateTime(2003, 9, 14), yValue = 23, yValue1 = 48, yValue2 = 53 },
                new TrackballChartData { xValue = new DateTime(2004, 2, 6), yValue = 19, yValue1 = 54, yValue2 = 63 },
                new TrackballChartData { xValue = new DateTime(2004, 9, 6), yValue = 31, yValue1 = 55, yValue2 = 50 },
                new TrackballChartData { xValue = new DateTime(2005, 2, 11), yValue = 39, yValue1 = 57, yValue2 = 66 },
                new TrackballChartData { xValue = new DateTime(2005, 9, 11), yValue = 50, yValue1 = 60, yValue2 = 65 },
                new TrackballChartData { xValue = new DateTime(2006, 2, 11), yValue = 24, yValue1 = 60, yValue2 = 79 },
            };
            ViewBag.dataSource = chartData;
            return View();
        }

        public class TrackballChartData
        {
            public DateTime xValue;
            public double yValue;
            public double yValue1;
            public double yValue2;
        }