corelibraries-devexpress-dot-xtracharts-ca6d7574.md
Lists the values used to specify a connector style of an annotation.
Namespace : DevExpress.XtraCharts
Assembly : DevExpress.XtraCharts.v25.2.dll
NuGet Package : DevExpress.Charts
[ResourceFinder(typeof(XtraChartsResFinder), "PropertyNamesRes")]
public enum AnnotationConnectorStyle
<ResourceFinder(GetType(XtraChartsResFinder), "PropertyNamesRes")>
Public Enum AnnotationConnectorStyle
| 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.
|
The following properties accept/return AnnotationConnectorStyle values:
| Library | Related API Members |
|---|---|
| Cross-Platform Class Library | Annotation.ConnectorStyle |
| WinForms Controls | AnnotationModel.ConnectorStyle |
The values listed by the AnnotationConnectorStyle enumeration are used to set the Annotation.ConnectorStyle property.
The following example demonstrates how to create text and image annotations and anchor them to a chart, its pane, and a series point.
#region #usings
using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using DevExpress.Drawing;
using DevExpress.XtraCharts;
// ...
#endregion #usings
namespace AnnotationsSample {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
#region #generalcode
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",
DXImage.FromStream(new FileStream(@"...\...\image.png", FileMode.Open, FileAccess.Read, FileShare.Read)));
// 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",
DXImage.FromStream(new FileStream(@"...\...\image.png", FileMode.Open, FileAccess.Read, FileShare.Read)));
// 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;
}
#endregion #generalcode
}
}
#Region "#usings"
Imports System
Imports System.Drawing
Imports System.IO
Imports System.Windows.Forms
Imports DevExpress.Drawing
Imports DevExpress.XtraCharts
' ...
#End Region ' #usings
Namespace AnnotationsSample
Public Partial Class Form1
Inherits Form
Public Sub New()
InitializeComponent()
End Sub
#Region "#generalcode"
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
' 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", DXImage.FromStream(New FileStream("...\...\image.png", FileMode.Open, FileAccess.Read, FileShare.Read)))
' 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", DXImage.FromStream(New FileStream("...\...\image.png", FileMode.Open, FileAccess.Read, FileShare.Read)))
' 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
#End Region ' #generalcode
End Class
End Namespace
See Also