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V24.2

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IChartSeriesPointImage Interface

Defines a point’s image settings.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

#Declaration

C#
public interface IChartSeriesPointImage

The following members return IChartSeriesPointImage objects:

#Remarks

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

Height
Specifies the image height.
Url
Specifies the image URL.
Width
Specifies the image width.

#Example

The following example illustrates how to:

Point images are specified based on CloudCover field value that comes from the chart’s data source. Images with the corresponding names are stored in the wwwroot/images folder.

Razor
<DxChart Data="@WeatherForecasts" CustomizeSeriesPoint="@PreparePointImage">
    <DxChartLineSeries AggregationMethod="@(i => (int)i.Average())"
                       ValueField="@((WeatherForecast i) => i.TemperatureF)"
                       ArgumentField="@(i => i.Date.Date)"
                       Name="Temperature, F">
        <DxChartSeriesPoint>
            <DxChartSeriesPointImage Width="50" Height="50" />
        </DxChartSeriesPoint>
    </DxChartLineSeries>
    <DxChartLegend Position="RelativePosition.Outside" />
</DxChart>

@code {
    WeatherForecast[] WeatherForecasts;
    ...
    protected void PreparePointImage(ChartSeriesPointCustomizationSettings pointSettings) {
        IEnumerable<WeatherForecast> dataItems = pointSettings.Point.DataItems.Cast<WeatherForecast>();
        var weatherType = dataItems.GroupBy(x => x.CloudCover).OrderByDescending(x => x.Count()).First().Key;
        pointSettings.PointAppearance.Image.Url = $"images/{weatherType}.png";
    }
}

Charts - A series point image

Run Demo: Charts - Series Point Image

See Also