100% Stacked Area in ASP.NET MVC Charts Component

30 Sep 202424 minutes to read

100% Stacked Area Chart

To render a 100% stacked area series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:

  • Set the series type: Define the series Type as StackingArea100 in your chart configuration. This indicates that the data should be represented as a 100% stacked area chart, where the cumulative values for each data point are expressed as a percentage of the total. This ensures that the sum of all series at each point is always 100%.
@Html.EJS().Chart("container-vertical").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").Width(2).DataSource(ViewBag.dataSource)
    .Name("John").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").Width(2).DataSource(ViewBag.dataSource)
    .Name("Peter").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").Width(2).DataSource(ViewBag.dataSource)
    .Name("Steve").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").Width(2).DataSource(ViewBag.dataSource)
    .Name("Charle").Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Binding data with series

You can bind data to the chart using the DataSource property within the series configuration. This allows you to connect a JSON dataset or remote data to your chart. To display the data correctly, map the fields from the data to the chart series XName and YName properties.

@Html.EJS().Chart("container-vertical").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").Width(2).DataSource(ViewBag.dataSource)
    .Name("John").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").Width(2).DataSource(ViewBag.dataSource)
    .Name("Peter").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").Width(2).DataSource(ViewBag.dataSource)
    .Name("Steve").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").Width(2).DataSource(ViewBag.dataSource)
    .Name("Charle").Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Series customization

The following properties can be used to customize the 100% stacked area series.

Fill

The Fill property determines the color applied to the series.

@Html.EJS().Chart("container-vertical").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").DataSource(ViewBag.dataSource)
    .Name("John").Fill("#ff4251").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").DataSource(ViewBag.dataSource)
    .Name("Peter").Fill("#4C4C4C").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").DataSource(ViewBag.dataSource)
    .Name("Steve").Fill("#794F1B").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").DataSource(ViewBag.dataSource)
    .Name("Charle").Fill("#1a9a6f").Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

The Fill property can be used to apply a gradient color to the 100% stacked area series. By configuring this property with gradient values, you can create a visually appealing effect in which the color transitions smoothly from one shade to another.

<svg style="width:1px; height:1px">
            <defs>
                <linearGradient id="gradient1">
                    <stop offset="0%" style="stop-color:coral;stop-opacity:5" />
                    <stop offset="50%" style="stop-color:mediumseagreen;stop-opacity:5" />
                </linearGradient>
            </defs>
</svg>

<svg style="width:1px; height:1px">
    <defs>
        <linearGradient id="gradient2">
            <stop offset="0%" style="stop-color:darkred;stop-opacity:5" />
            <stop offset="50%" style="stop-color:darkorange;stop-opacity:5" />
        </linearGradient>
    </defs>
</svg>

<svg style="width:1px; height:1px">
    <defs>
        <linearGradient id="gradient3">
            <stop offset="0%" style="stop-color:darkmagenta;stop-opacity:5" />
            <stop offset="50%" style="stop-color:darkcyan;stop-opacity:5" />
        </linearGradient>
    </defs>
</svg>

<svg style="width:1px; height:1px">
    <defs>
        <linearGradient id="gradient4">
            <stop offset="0%" style="stop-color:darkviolet;stop-opacity:5" />
            <stop offset="50%" style="stop-color:darkgoldenrod;stop-opacity:5" />
        </linearGradient>
    </defs>
</svg>

@Html.EJS().Chart("container-vertical").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").DataSource(ViewBag.dataSource)
    .Name("John").Fill("url(#gradient1)").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").DataSource(ViewBag.dataSource)
    .Name("Peter").Fill("url(#gradient2)").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").DataSource(ViewBag.dataSource)
    .Name("Steve").Fill("url(#gradient3)").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").DataSource(ViewBag.dataSource)
    .Name("Charle").Fill("url(#gradient4)").Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Opacity

The Opacity property specifies the transparency level of the fill. Adjusting this property allows you to control how opaque or transparent the fill color of the series appears.

@Html.EJS().Chart("container-vertical").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").Width(2).Opacity(0.5).DataSource(ViewBag.dataSource)
    .Name("John").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").Width(2).Opacity(0.5).DataSource(ViewBag.dataSource)
    .Name("Peter").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").Width(2).Opacity(0.5).DataSource(ViewBag.dataSource)
    .Name("Steve").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").Width(2).Opacity(0.5).DataSource(ViewBag.dataSource)
    .Name("Charle").Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Dash array

The DashArray property determines the pattern of dashes and gaps in the series.

@Html.EJS().Chart("container-vertical").Series(series =>
    {
        series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
        .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").DataSource(ViewBag.dataSource)
        .Name("John").DashArray("5,5").Border(ViewBag.border).Add();
        series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
        .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").DataSource(ViewBag.dataSource)
        .Name("Peter").DashArray("5,5").Border(ViewBag.border).Add();
        series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
        .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").DataSource(ViewBag.dataSource)
        .Name("Steve").DashArray("5,5").Border(ViewBag.border).Add();
        series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
        .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").DataSource(ViewBag.dataSource)
        .Name("Charle").DashArray("5,5").Border(ViewBag.border).Add();
    }).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            ChartBorder border = new ChartBorder();
            border.Width = 2;
            border.Color = "green";
            ViewBag.border = border;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Empty points

Data points with null or undefined values are considered empty. Empty data points are ignored and not plotted on the chart.

Mode

Use the Mode property to define how empty or missing data points are handled in the series. The default mode for empty points is Gap.

@Html.EJS().Chart("container-vertical").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").DataSource(ViewBag.dataSource)
    .Name("John").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").DataSource(ViewBag.dataSource)
    .Name("Peter").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").DataSource(ViewBag.dataSource)
    .Name("Steve").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").DataSource(ViewBag.dataSource)
    .Name("Charle").EmptyPointSettings(ViewBag.emptyPoint).Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
{
    List<StackedLineChartData> chartData = new List<StackedLineChartData>
        {
            new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
            new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
            new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
            new StackedLineChartData { x= "Clothes", y= null, y1= 30, y2= 60, y3= 180 },
            new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
            new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
            new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
            new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= null, y3= 75 },
            new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
            new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
            new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
            new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
        };
        ViewBag.dataSource = chartData;
        ChartEmptyPointSettings chartEmptyPointSettings = new ChartEmptyPointSettings();
        chartEmptyPointSettings.Mode = EmptyPointMode.Gap;
        ViewBag.emptyPoint = chartEmptyPointSettings;
        return View();
}


public class StackedLineChartData
{
    public string x;
    public double? y;
    public double y1;
    public double? y2;
    public double y3;
}

Fill

Use the Fill property to customize the fill color of empty points in the series.

@Html.EJS().Chart("container-vertical").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").DataSource(ViewBag.dataSource)
    .Name("John").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").DataSource(ViewBag.dataSource)
    .Name("Peter").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").DataSource(ViewBag.dataSource)
    .Name("Steve").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").DataSource(ViewBag.dataSource)
    .Name("Charle").EmptyPointSettings(ViewBag.emptyPoint).Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
{
    List<StackedLineChartData> chartData = new List<StackedLineChartData>
    {
        new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
        new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
        new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
        new StackedLineChartData { x= "Clothes", y= null, y1= 30, y2= 60, y3= 180 },
        new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
        new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
        new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
        new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= null, y3= 75 },
        new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
        new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
        new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
        new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
    };
    ViewBag.dataSource = chartData;
    ChartEmptyPointSettings chartEmptyPointSettings = new ChartEmptyPointSettings();
    chartEmptyPointSettings.Mode = EmptyPointMode.Average;
    chartEmptyPointSettings.Fill = "red";
    ViewBag.emptyPoint = chartEmptyPointSettings;
        ChartMarkerSettings marker = new ChartMarkerSettings();
        marker.Visible = true;
        marker.Width = 7;
        marker.Height = 7;
        marker.IsFilled = true;
        ViewBag.marker = marker;
        return View();
}


public class StackedLineChartData
{
    public string x;
    public double? y;
    public double y1;
    public double? y2;
    public double y3;
}

Border

Use the Border property to customize the width and color of the border for empty points.

@Html.EJS().Chart("container-vertical").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").DataSource(ViewBag.dataSource)
    .Name("John").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").DataSource(ViewBag.dataSource)
    .Name("Peter").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").DataSource(ViewBag.dataSource)
    .Name("Steve").EmptyPointSettings(ViewBag.emptyPoint).Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").DataSource(ViewBag.dataSource)
    .Name("Charle").EmptyPointSettings(ViewBag.emptyPoint).Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
public ActionResult Index()
{
    List<StackedLineChartData> chartData = new List<StackedLineChartData>
        {
            new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
            new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
            new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
            new StackedLineChartData { x= "Clothes", y= null, y1= 30, y2= 60, y3= 180 },
            new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
            new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
            new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
            new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= null, y3= 75 },
            new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
            new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
            new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
            new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
        };
        ViewBag.dataSource = chartData;
        ChartEmptyPointSettings chartEmptyPointSettings = new ChartEmptyPointSettings();
        chartEmptyPointSettings.Mode = EmptyPointMode.Average;
        chartEmptyPointSettings.Border.Width = 2;
        chartEmptyPointSettings.Border.Color = "green";
        ViewBag.emptyPoint = chartEmptyPointSettings;
        ChartMarkerSettings marker = new ChartMarkerSettings();
        marker.Visible = true;
        marker.Width = 7;
        marker.Height = 7;
        marker.IsFilled = true;
        ViewBag.marker = marker;
        return View();
}


public class StackedLineChartData
{
    public string x;
    public double? y;
    public double y1;
    public double? y2;
    public double y3;
}

Events

Series render

The SeriesRender event allows you to customize series properties, such as data, fill, and name, before they are rendered on the chart.

@Html.EJS().Chart("container-vertical").SeriesRender("changeColor").Series(series =>
{
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").Width(2).DataSource(ViewBag.dataSource)
    .Name("John").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").Width(2).DataSource(ViewBag.dataSource)
    .Name("Peter").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").Width(2).DataSource(ViewBag.dataSource)
    .Name("Steve").Add();
    series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
    .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").Width(2).DataSource(ViewBag.dataSource)
    .Name("Charle").Add();
}).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()


<script>
    function changeColor(args) {
        if (args.series.index === 0) {
            args.fill = '#ff4251';
        }
        else if (args.series.index === 1) {
            args.fill = '#4C4C4C';
        }
        else if (args.series.index === 2) {
            args.fill = '#794F1B';
        }
        else if (args.series.index === 3) {
            args.fill = '#1a9a6f';
        }
    }
</script>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

Point render

The PointRender event allows you to customize each data point before it is rendered on the chart.

@Html.EJS().Chart("container-vertical").PointRender("changeColor").Series(series =>
    {
        series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
        .Marker(mkr => mkr.Visible(true)).XName("x").YName("y").Width(2).DataSource(ViewBag.dataSource)
        .Name("John").Add();
        series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
        .Marker(mkr => mkr.Visible(true)).XName("x").YName("y1").Width(2).DataSource(ViewBag.dataSource)
        .Name("Peter").Add();
        series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
        .Marker(mkr => mkr.Visible(true)).XName("x").YName("y2").Width(2).DataSource(ViewBag.dataSource)
        .Name("Steve").Add();
        series.Type(Syncfusion.EJ2.Charts.ChartSeriesType.StackingArea100)
        .Marker(mkr => mkr.Visible(true)).XName("x").YName("y3").Width(2).DataSource(ViewBag.dataSource)
        .Name("Charle").Add();
    }).PrimaryXAxis(px => px.ValueType(Syncfusion.EJ2.Charts.ValueType.Category)).Title("Family Expense for Month").Render()
    
    
    <script>
        function changeColor(args) {
            if (args.point.y < 100) {
                args.fill = '#ff6347';
            }
            else {
                args.fill = '#009cb8';
            }
        }
    </script>
public ActionResult Index()
        {
            List<StackedLineChartData> chartData = new List<StackedLineChartData>
            {
                new StackedLineChartData { x= "Food", y= 90, y1= 40, y2= 70, y3= 120 },
                new StackedLineChartData { x= "Transport", y= 80, y1= 90, y2= 110, y3= 70 },
                new StackedLineChartData { x= "Medical", y= 50, y1= 80, y2= 120, y3= 50 },
                new StackedLineChartData { x= "Clothes", y= 70, y1= 30, y2= 60, y3= 180 },
                new StackedLineChartData { x= "Personal Care", y= 30, y1= 80, y2= 80, y3= 30 },
                new StackedLineChartData { x= "Books", y= 10, y1= 40, y2= 30, y3= 270 },
                new StackedLineChartData { x= "Fitness", y= 100,y1= 30, y2= 70, y3= 40 },
                new StackedLineChartData { x= "Electricity", y= 55, y1= 95, y2= 55, y3= 75 },
                new StackedLineChartData { x= "Tax", y= 20, y1= 50, y2= 40, y3= 65 },
                new StackedLineChartData { x= "Pet Care", y= 40, y1= 20, y2= 80, y3= 95 },
                new StackedLineChartData { x= "Education", y= 45, y1= 15, y2= 45, y3= 195 },
                new StackedLineChartData { x= "Entertainment", y= 75, y1= 45, y2= 65, y3= 115 }
            };
            ViewBag.dataSource = chartData;
            return View();
        }
        public class StackedLineChartData
        {
            public string x;
            public double y;
            public double y1;
            public double y2;
            public double y3;
        }

See Also