IChartSeriesPoint Interface

Defines a point’s appearance settings.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v25.1.dll

NuGet Package: DevExpress.Blazor

Declaration

public interface IChartSeriesPoint

Related API Members

The following members return IChartSeriesPoint objects:

• ChartSeriesPointCustomizationSettings.PointAppearance

Remarks

Use the PointAppearance property in a CustomizeSeriesPoint event handler to access and modify the following point settings:

Color

Specifies the point’s color.

Image

Specifies the point’s image.

Size

Specifies the diameter of series points in pixels.

Symbol

Specifies a series point’s symbol.

Visible

Specifies a series point’s visibility.

Example

The following code snippet demonstrates how to:

• use the DxChartSeriesPoint component to define the common point appearance;
• handle the CustomizeSeriesPoint event to change the color of points whose values are greater than 75 or less than 25.

<DxChart Data="@WeatherForecasts" CustomizeSeriesPoint="@PreparePointColor">
    <DxChartLineSeries SummaryMethod="@(i => (int)i.Average())"
                       Color="System.Drawing.Color.Gray"
                       ValueField="@((WeatherForecast i) => i.TemperatureF)"
                       ArgumentField="@(i => i.Date.Date)"
                       Name="Temperature, F">
        <DxChartSeriesPoint Symbol="ChartPointSymbol.Polygon"
                            Color="System.Drawing.Color.Gray" Size="25" />
    </DxChartLineSeries>
    <DxChartLegend Position="RelativePosition.Outside" />
</DxChart>

@code {
    WeatherForecast[] WeatherForecasts;
    ...
    protected void PreparePointColor(ChartSeriesPointCustomizationSettings pointSettings) {
        double value = (double)pointSettings.Point.Value;
        if(value > 75)
            pointSettings.PointAppearance.Color = System.Drawing.Color.Red;
        else if(value < 25)
            pointSettings.PointAppearance.Color = System.Drawing.Color.Blue;
    }
}

Run Demo: Charts - Series Point Customization