Table of Contents

Class BOBBarChart<TX, TY>

Namespace
BlazOrbit.Charts.Components
Assembly
BlazOrbit.Charts.dll

Vertical bar chart with multi-series support. X axis is categorical (typically string labels), Y axis is a linear numeric scale.

public sealed class BOBBarChart<TX, TY> : BOBChartBase<TX, TY>, IDataVisualizationFamilyComponent, IHasSeries<TX, TY>, IHasAxes where TX : notnull

Type Parameters

TX

Type of the X-axis categories. Compared via object.Equals(object); string is the typical choice.

TY

Numeric type of the Y values (int, long, double, decimal, etc.).

Inheritance
object
ComponentBase
BOBChartBase<TX, TY>
BOBBarChart<TX, TY>
Implements
IHasSeries<TX, TY>
Inherited Members

Constructors

BOBBarChart() 

public BOBBarChart()

Properties

BarGroupRatio

Width of each bar group as a fraction of the categorical band (0..1). 0.8 means each group fills 80% of its band, leaving 10% padding on either side. Series within a group share that width equally.

[Parameter]
public double BarGroupRatio { get; set; }

Property Value

double

OnDataHover

Fired when the user hovers a bar (mouseenter). Raised in addition to the native SVG <title> tooltip so callers can drive secondary UI off the same signal.

[Parameter]
public EventCallback<BOBChartHoverArgs<TX, TY>> OnDataHover { get; set; }

Property Value

EventCallback<BOBChartHoverArgs<TX, TY>>

OnPointClick

Fired when the user clicks a bar. The argument carries the series label, the X / Y values and the point index - useful for drill-down navigation or row-selection patterns.

[Parameter]
public EventCallback<BOBChartClickArgs<TX, TY>> OnPointClick { get; set; }

Property Value

EventCallback<BOBChartClickArgs<TX, TY>>

ReferenceLines

Horizontal reference / threshold lines drawn across the plot area (e.g. SLO targets, budget caps). Rendered over the grid but under the bars so they stay visible without blocking hover.

[Parameter]
public IEnumerable<BOBChartReferenceLine>? ReferenceLines { get; set; }

Property Value

IEnumerable<BOBChartReferenceLine>

Series

The series rendered by the chart, in declaration order. Order affects stacking, legend listing and z-index.

[Parameter]
public IEnumerable<BOBChartSeries<TX, TY>>? Series { get; set; }

Property Value

IEnumerable<BOBChartSeries<TX, TY>>

StackMode

Layout strategy for multi-series bars: None (default, side-by-side), Stacked (cumulative totals per category) or PercentStacked (each category normalised to 100%).

[Parameter]
public BOBBarStackMode StackMode { get; set; }

Property Value

BOBBarStackMode

XAxis

Configuration for the horizontal axis.

[Parameter]
public BOBChartAxis XAxis { get; set; }

Property Value

BOBChartAxis

YAxis

Configuration for the vertical axis.

[Parameter]
public BOBChartAxis YAxis { get; set; }

Property Value

BOBChartAxis

Methods

BuildAriaLabel()

Default ARIA label for the chart's <svg> root. Subclasses override to inject series / value summaries (improves screen-reader experience).

protected override string BuildAriaLabel()

Returns

string

RenderSvg(RenderTreeBuilder)

Concrete charts override this to emit SVG content. The supplied builder is positioned inside the <svg> root, so implementations only need to add geometry primitives (lines, paths, rects, text). Sequence numbers must remain unique within the override.

protected override void RenderSvg(RenderTreeBuilder builder)

Parameters

builder RenderTreeBuilder

Render tree builder positioned inside the SVG root.

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