Class RadzenSeriesAnnotation<TItem>

Displays a text label for the specified data item from the series.

Inheritance

System.Object

RadzenChartComponentBase

RadzenSeriesAnnotation<TItem>

Implements

IChartSeriesOverlay

IDisposable

Inherited Members

RadzenChartComponentBase.Chart

RadzenChartComponentBase.Initialize()

RadzenChartComponentBase.SetParametersAsync(ParameterView)

RadzenChartComponentBase.ValidateParameters()

RadzenChartComponentBase.DidParameterChange<T>(ParameterView, String, T)

Namespace: Radzen.Blazor

Assembly: Radzen.Blazor.dll

Syntax

public class RadzenSeriesAnnotation<TItem> : RadzenChartComponentBase, IChartSeriesOverlay, IDisposable

Type Parameters

Name	Description
TItem

Examples

  <RadzenChart>
      <RadzenLineSeries Data=@revenue CategoryProperty="Quarter" ValueProperty="Revenue">
         <RadzenSeriesAnnotation Data="@revenue[1] Text="Q2 Revenue" />
      </RadzenLineSeries>
  </RadzenChart>
  @code {
      class DataItem
      {
          public string Quarter { get; set; }
          public double Revenue { get; set; }
      }
      DataItem[] revenue = new DataItem[]
      {
          new DataItem { Quarter = "Q1", Revenue = 234000 },
          new DataItem { Quarter = "Q2", Revenue = 284000 },
          new DataItem { Quarter = "Q3", Revenue = 274000 },
          new DataItem { Quarter = "Q4", Revenue = 294000 }
      };
  }

Properties

Data

The data item from the series this annotation applies to.

Declaration

public TItem Data { get; set; }

Property Value

Type	Description
TItem

OffsetX

Horizontal offset from the default position.

Declaration

public double OffsetX { get; set; }

Property Value

Type	Description
System.Double

OffsetY

Vertical offset from the default position.

Declaration

public double OffsetY { get; set; }

Property Value

Type	Description
System.Double

Series

The series this annotation applies to. Set to true by default.

Declaration

protected CartesianSeries<TItem> Series { get; set; }

Property Value

Type	Description
CartesianSeries<TItem>

Text

The text to display in the annotation.

Declaration

public string Text { get; set; }

Property Value

Type	Description
System.String

Visible

Determines whether the annotation is visible. Set to true by default.

Declaration

public bool Visible { get; set; }

Property Value

Type	Description
System.Boolean

Methods

Contains(Double, Double, Int32)

Hit test

Declaration

public bool Contains(double mouseX, double mouseY, int tolerance)

Parameters

Type	Name	Description
System.Double	mouseX
System.Double	mouseY
System.Int32	tolerance

Returns

Type	Description
System.Boolean

Dispose()

Declaration

public void Dispose()

GetTooltipPosition(Double, Double)

Get position of the overlay tooltip.

Declaration

public Point GetTooltipPosition(double mouseX, double mouseY)

Parameters

Type	Name	Description
System.Double	mouseX
System.Double	mouseY

Returns

Type	Description
Point	Position.

Render(ScaleBase, ScaleBase)

Render overlay

Declaration

public RenderFragment Render(ScaleBase categoryScale, ScaleBase valueScale)

Parameters

Type	Name	Description
ScaleBase	categoryScale
ScaleBase	valueScale

Returns

Type	Description
RenderFragment	RenderFragment

RenderTooltip(Double, Double)

Renders tooltip

Declaration

public RenderFragment RenderTooltip(double mouseX, double mouseY)

Parameters

Type	Name	Description
System.Double	mouseX
System.Double	mouseY

Returns

Type	Description
RenderFragment

ShouldRefreshChart(ParameterView)

Determines if RadzenChart should render.

Declaration

protected override bool ShouldRefreshChart(ParameterView parameters)

Parameters

Type	Name	Description
ParameterView	parameters	The parameters.

Returns

Type	Description
System.Boolean

Overrides

RadzenChartComponentBase.ShouldRefreshChart(ParameterView)

Implements

IChartSeriesOverlay

IDisposable