Class TextAnnotation

This class is used to add a text annotation to the SfCartesianChart. An instance of this class needs to be added to the Annotations collection.

Inheritance
System.Object
ChartAnnotation
TextAnnotation
Inherited Members
Namespace: Syncfusion.Maui.Charts
Assembly: Syncfusion.Maui.Charts.dll
Syntax
public class TextAnnotation : ChartAnnotation, IThemeElement
Remarks

Text annotations are used to add simple text at specific points over the chart area.

Examples
<chart:SfCartesianChart.Annotations>
  <chart:TextAnnotation X1="3" Y1="10" Text="TextAnnotation">
  </chart:TextAnnotation>
</chart:SfCartesianChart.Annotations>

Constructors

TextAnnotation()

Declaration
public TextAnnotation()

Fields

LabelStyleProperty

Identifies the LabelStyle bindable property.

Declaration
public static readonly BindableProperty LabelStyleProperty
Field Value
Type Description
Microsoft.Maui.Controls.BindableProperty

The identifier for LabelStyle bindable property.

TextProperty

Identifies the Text bindable property.

Declaration
public static readonly BindableProperty TextProperty
Field Value
Type Description
Microsoft.Maui.Controls.BindableProperty

The identifier for Text bindable property.

Properties

LabelStyle

Get or set the value to customize the appearance of annotation text.

Declaration
public ChartAnnotationLabelStyle LabelStyle { get; set; }
Property Value
Type Description
ChartAnnotationLabelStyle

This property takes the ChartAnnotationLabelStyle as its value.
Examples
    <chart:SfCartesianChart>

    <!-- ... Eliminated for simplicity-->
    <chart:SfCartesianChart.Annotations>
         <chart:TextAnnotation X1="3" Y1="30" Text="TextAnnotation">
          <chart:TextAnnotation.LabelStyle>
            <chart:ChartAnnotationLabelStyle HorizontalTextAlignment="Start" VerticalTextAlignment="Start"/>
          </chart:TextAnnotation.LabelStyle>
         </chart:TextAnnotation>
    </chart:SfCartesianChart.Annotations>  

    </chart:SfCartesianChart>

Text

Gets or sets the text to be displayed on the annotation.

Declaration
public string Text { get; set; }
Property Value
Type Description
System.String

This property takes the string as its value and its default value is string.Empty.
Examples
    <chart:SfCartesianChart>

    <!-- ... Eliminated for simplicity-->
    <chart:SfCartesianChart.Annotations>
         <chart:TextAnnotation X1="3" Y1="30" Text="TextAnnotation">         
         </chart:HorizontalLineAnnotation>
    </chart:SfCartesianChart.Annotations>  

    </chart:SfCartesianChart>

Methods

Draw(ICanvas, RectF)

Declaration
protected override void Draw(ICanvas canvas, RectF dirtyRect)
Parameters
Type Name Description
Microsoft.Maui.Graphics.ICanvas canvas
Microsoft.Maui.Graphics.RectF dirtyRect
Overrides

OnBindingContextChanged()

Declaration
protected override void OnBindingContextChanged()

OnParentSet()

Declaration
protected override void OnParentSet()