Skip to main content
All docs
V24.2

DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

Take the survey Not interested

DxRangeSelectorChart.Palette Property

Specifies the color scheme for DxRangeSelectorChart series.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

#Declaration

C#
[Parameter]
public string[] Palette { get; set; }

#Property Value

Type Description
String[]

An array of colors.

#Remarks

The <DxRangeSelector> component allows you to create a custom palette for DxRangeSelectorChart series. To apply a palette, assign it to the Palette property.

The Palette property accepts the following formats:

  • Longhand and shorthand hexadecimal color values: #ffff00, #ff0.
  • RGB and RGBA color codes: rgb(255, 0, 0), rgba(0, 230, 0, 0.3).
  • HTML color name (case-insensitive): red, DarkGreen.

When the number of series exceeds the number of palette colors, you can use the PaletteExtensionMode property to specify how to extend the palette.

The following code snippet applies a custom palette to DxRangeSelectorChart series and changes the palette’s extension mode:

Range Selector - Chart Palette

@using System.Linq.Expressions
<div style="display:flex;">
    <label style="padding-right:10px;padding-top:2px;">Palette Extension Mode:</label>
    <DxComboBox Data="Enum.GetValues<ChartPaletteExtensionMode>()"
                @bind-Value="@ExtensionMode" />
</div>

<DxRangeSelector Width="100%"
                 Data="@Data"
                 ValueChangeMode="RangeSelectorValueChangeMode.OnHandleMove">
    <DxRangeSelectorChart Palette="@Palette"
                          PaletteExtensionMode="@ExtensionMode">
        @CreateChartAreaSeries(s => s.Y1)
        @CreateChartAreaSeries(s => s.Y2)
        @CreateChartAreaSeries(s => s.Y3)
    </DxRangeSelectorChart>
    <DxRangeSelectorScale TickInterval="50" />
</DxRangeSelector>

@code {
    ChartPaletteExtensionMode ExtensionMode { get; set; } = ChartPaletteExtensionMode.Alternate;
    string[] Palette => new string[] { "#5f368d", "#28a745" };

    IEnumerable<RangePoint> Data = Enumerable.Empty<RangePoint>();
    protected override void OnInitialized() {
        Data = GenerateData();
    }

    private RenderFragment CreateChartAreaSeries(Expression<Func<RangePoint, double>> valueField) =>
        @<DxChartAreaSeries ArgumentField="@(s => s.Arg)"
                            ValueField="@(valueField)">
        </DxChartAreaSeries>
    ;
}
See Also