AnnotationConnectorStyle Enum

Lists the values used to specify a connector style of an annotation.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v20.1.dll

NuGet Packages: DevExpress.Charts, DevExpress.WindowsDesktop.Charts

Declaration

C#

[ResourceFinder(typeof(XtraChartsResFinder), "PropertyNamesRes")]
public enum AnnotationConnectorStyle

VB.NET

<ResourceFinder(GetType(XtraChartsResFinder), "PropertyNamesRes")>
Public Enum AnnotationConnectorStyle

Members

Name	Description
None	The annotation connector is disabled.
Tail	Represents the tail annotation connector style.
Arrow	Represents the arrow annotation connector style.
NotchedArrow	Represents the notched arrow annotation connector style.
Line	Represents the line annotation connector style.

Related API Members

The following properties accept/return AnnotationConnectorStyle values:

Library	Related API Members
Cross-Platform Class Library	Annotation.ConnectorStyle
WinForms Controls	AnnotationModel.ConnectorStyle

Remarks

The values listed by the AnnotationConnectorStyle enumeration are used to set the Annotation.ConnectorStyle property.

Example

This example demonstrates how text and image annotations can be created and anchored to a chart, pane or series point.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-accompany-a-chart-its-pane-or-series-point-by-text-or-image-annotations-e2188

Form1.cs

using System;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...
        private void Form1_Load(object sender, EventArgs e) {
            // Add a text annotation to the chart control's repository.
            chartControl1.AnnotationRepository.Add(new TextAnnotation("Annotation 1"));

            // And, assign a series point to the annotation's AnchorPoint property.
            // This adds the annotation to the series point's Annotations collection.
            chartControl1.AnnotationRepository[0].AnchorPoint =
                new SeriesPointAnchorPoint(chartControl1.Series[0].Points[2]);

            // Now, create an image annotation, and add it to the chart's collection.
            chartControl1.Annotations.AddImageAnnotation("Annotation 2",
                Bitmap.FromFile(@"...\...\image.png"));

            // Define the X and Y absolute coordinates for the annotation, in pixels.
            ((ChartAnchorPoint)chartControl1.Annotations[0].AnchorPoint).X = 150;
            ((ChartAnchorPoint)chartControl1.Annotations[0].AnchorPoint).Y = 150;

            // Obtain the additional pane from the diagram's collection.
            XYDiagramPaneBase myPane = ((XYDiagram)chartControl1.Diagram).Panes[0];

            // And, position the chart's annotation in this pane's right top corner;
            ((FreePosition)chartControl1.Annotations[0].ShapePosition).DockTarget = myPane;
            ((FreePosition)chartControl1.Annotations[0].ShapePosition).DockCorner = DockCorner.RightTop;

            // Another annotation is now being added to the collection of this pane.
            myPane.Annotations.AddImageAnnotation("Annotation 3", Bitmap.FromFile(@"...\...\image.png"));

            // Define its axis coordinates (in units appropriate for the scale type of the axes).
            ((PaneAnchorPoint)myPane.Annotations[0].AnchorPoint).AxisXCoordinate.AxisValue = 2;
            ((PaneAnchorPoint)myPane.Annotations[0].AnchorPoint).AxisYCoordinate.AxisValue = 180;

            // Position the annotation in relation to its anchor point.
            ((RelativePosition)myPane.Annotations[0].ShapePosition).Angle = -135;
            ((RelativePosition)myPane.Annotations[0].ShapePosition).ConnectorLength = 50;

            // You can get an annotation either via the collection of the element to which it is anchored,
            // or centrally, via the chart control's repository (e.g. by its name).
            TextAnnotation myTextAnnotation =
                (TextAnnotation)chartControl1.AnnotationRepository.GetElementByName("Annotation 1");
            ImageAnnotation myImageAnnotation =
                (ImageAnnotation)chartControl1.AnnotationRepository.GetElementByName("Annotation 3");

            // Define the text for the text annotation.
            myTextAnnotation.Text = "<i>Basic</i> <b>HTML</b> <u>is</u> <color=blue>supported</color>.";

            // Enable the interactive positioning for the image annotation.
            myImageAnnotation.RuntimeMoving = true;
            myImageAnnotation.RuntimeAnchoring = true;
            myImageAnnotation.RuntimeResizing = true;
            myImageAnnotation.RuntimeRotation = true;

            // Specify image annotation size mode.
            myImageAnnotation.SizeMode = ChartImageSizeMode.Tile;

            // And, adjust image annotation appearance options.
            myImageAnnotation.ShapeKind = ShapeKind.RoundedRectangle;
            myImageAnnotation.ShapeFillet = 10;
            myImageAnnotation.ConnectorStyle = AnnotationConnectorStyle.Arrow;
        }

Form1.vb

Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports DevExpress.XtraCharts
' ...
        Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) Handles MyBase.Load
            ' Add a text annotation to the chart control's repository.
            chartControl1.AnnotationRepository.Add(New TextAnnotation("Annotation 1"))

            ' And, assign a series point to the annotation's AnchorPoint property.
            ' This adds the annotation to the series point's Annotations collection.
            chartControl1.AnnotationRepository(0).AnchorPoint = New SeriesPointAnchorPoint(chartControl1.Series(0).Points(2))

            ' Now, create an image annotation, and add it to the chart's collection.
            chartControl1.Annotations.AddImageAnnotation("Annotation 2", Bitmap.FromFile("...\...\image.png"))

            ' Define the X and Y absolute coordinates for the annotation, in pixels.
            CType(chartControl1.Annotations(0).AnchorPoint, ChartAnchorPoint).X = 150
            CType(chartControl1.Annotations(0).AnchorPoint, ChartAnchorPoint).Y = 150

            ' Obtain the additional pane from the diagram's collection.
            Dim myPane As XYDiagramPaneBase = CType(chartControl1.Diagram, XYDiagram).Panes(0)

            ' And, position the chart's annotation in this pane's right top corner;
            CType(chartControl1.Annotations(0).ShapePosition, FreePosition).DockTarget = myPane
            CType(chartControl1.Annotations(0).ShapePosition, FreePosition).DockCorner = DockCorner.RightTop

            ' Another annotation is now being added to the collection of this pane.
            myPane.Annotations.AddImageAnnotation("Annotation 3", Bitmap.FromFile("...\...\image.png"))

            ' Define its axis coordinates (in units appropriate for the scale type of the axes).
            CType(myPane.Annotations(0).AnchorPoint, PaneAnchorPoint).AxisXCoordinate.AxisValue = 2
            CType(myPane.Annotations(0).AnchorPoint, PaneAnchorPoint).AxisYCoordinate.AxisValue = 180

            ' Position the annotation in relation to its anchor point.
            CType(myPane.Annotations(0).ShapePosition, RelativePosition).Angle = -135
            CType(myPane.Annotations(0).ShapePosition, RelativePosition).ConnectorLength = 50

            ' You can get an annotation either via the collection of the element to which it is anchored,
            ' or centrally, via the chart control's repository (e.g. by its name).
            Dim myTextAnnotation As TextAnnotation = CType(chartControl1.AnnotationRepository.GetElementByName("Annotation 1"), TextAnnotation)
            Dim myImageAnnotation As ImageAnnotation = CType(chartControl1.AnnotationRepository.GetElementByName("Annotation 3"), ImageAnnotation)

            ' Define the text for the text annotation.
            myTextAnnotation.Text = "<i>Basic</i> <b>HTML</b> <u>is</u> <color=blue>supported</color>."

            ' Enable the interactive positioning for the image annotation.
            myImageAnnotation.RuntimeMoving = True
            myImageAnnotation.RuntimeAnchoring = True
            myImageAnnotation.RuntimeResizing = True
            myImageAnnotation.RuntimeRotation = True

            ' Specify image annotation size mode.
            myImageAnnotation.SizeMode = ChartImageSizeMode.Tile

            ' And, adjust image annotation appearance options.
            myImageAnnotation.ShapeKind = ShapeKind.RoundedRectangle
            myImageAnnotation.ShapeFillet = 10
            myImageAnnotation.ConnectorStyle = AnnotationConnectorStyle.Arrow
        End Sub