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

DxChartZoomAndPanDragBoxStyle.Color Property

Specifies the color of the drag box that appears when a user selects a chart area for zooming.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v24.2.dll

NuGet Package: DevExpress.Blazor

#Declaration

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

#Property Value

Type Description
String

The drag box color.

#Remarks

In DxChart, users can drag the mouse to select a chart area for zooming. To enable this functionality, set the AllowDragToZoom property to true.

The DxChartZoomAndPanDragBoxStyle component allows you to configure style settings for the drag box that appears when a user selects a chart area.

The Color 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.

The following code snippet colors the drag box purple and sets the opacity value to 0.8:

razor
<DxChart Data="@DataSource"
         Width="100%">
    <DxChartTitle Text="Life Expectancy vs. Birth Rate" />
    <DxChartLegend Position="RelativePosition.Inside"
                    VerticalAlignment="VerticalEdge.Top"
                    HorizontalAlignment="HorizontalAlignment.Right" />
    <DxChartScatterSeries ArgumentField="@((BirthLife i) => i.LifeExp)"
                            ValueField="@((BirthLife i) => i.BirthRate)"
                            Filter="@((BirthLife i) => i.Year == 1970)"
                            Name="1970">
        <DxChartSeriesPoint Size="8" />
    </DxChartScatterSeries>
    <DxChartScatterSeries ArgumentField="@((BirthLife i) => i.LifeExp)"
                          ValueField="@((BirthLife i) => i.BirthRate)"
                          Filter="@((BirthLife i) => i.Year == 2010)"
                          Name="2010">
        <DxChartSeriesPoint Size="8" />
    </DxChartScatterSeries>
    <DxChartArgumentAxis>
        <DxChartAxisTitle Text="Life Expectancy" />
    </DxChartArgumentAxis>
    <DxChartValueAxis>
        <DxChartAxisTitle Text="Birth Rate" />
    </DxChartValueAxis>
    <DxChartTooltip Enabled="true">
        <div style="margin: 0.75rem">
            <div>@(((BirthLife)context.Point.DataItems.First()).Country)
                 @(((BirthLife)context.Point.DataItems.First()).Year)</div>
        </div>
    </DxChartTooltip>
    <DxChartZoomAndPanSettings ArgumentAxisZoomAndPanMode="ChartAxisZoomAndPanMode.Both"
                               ValueAxisZoomAndPanMode="ChartAxisZoomAndPanMode.Both"
                               AllowDragToZoom="true"
                               AllowMouseWheel="true"
                               PanKey="ChartEventPanKey.Shift">
        <DxChartZoomAndPanDragBoxStyle Color="purple" Opacity="0.8" />
    </DxChartZoomAndPanSettings>
</DxChart>

@code {
    IEnumerable<BirthLife> DataSource = Enumerable.Empty<BirthLife>();
    protected override void OnInitialized() {
        DataSource = ChartBirthLifeDataProvider.GenerateData();
    }
}

See Also