ImageNode.Data Property

Článek
10/19/2012

Gets and sets application-defined data for the ImageNode object.

Namespace: Microsoft.Ink
Assembly: Microsoft.Ink.Analysis (in Microsoft.Ink.Analysis.dll)

Syntax

'Declaration
Public Property Data As Object
'Usage
Dim instance As ImageNode 
Dim value As Object 

value = instance.Data

instance.Data = value

public Object Data { get; set; }

public:
property Object^ Data {
    Object^ get ();
    void set (Object^ value);
}

public function get Data () : Object 
public function set Data (value : Object)

Property Value

Type: System.Object
The application-defined data for the ImageNode object.

Remarks

Use this property to add your own data to the ImageNode object.

Examples

The following example adds an ImageNode object to an InkAnalyzer, theInkAnalyzer, for a PictureBox control, thePictureBox. It converts the location of the PictureBox control from pixel coordinates to ink coordinates. It sets the Data property of the ImageNode object to be the Image property of the PictureBox.

' Add image node 
Dim pictureNode As ImageNode = _
    theInkAnalyzer.RootNode.CreateSubNode(Microsoft.Ink.ContextNodeType.Image)

' Convert pixel coordinates to pixel coordinates 
Dim pictureTopLeft As Point = thePictureBox.Location
Dim pictureBottomRight As New Point(thePictureBox.Right, thePictureBox.Bottom)
Dim panelGraphics As Graphics = theNotesPanel.CreateGraphics()
theInkCollector.Renderer.PixelToInkSpace(panelGraphics, pictureTopLeft)
theInkCollector.Renderer.PixelToInkSpace(panelGraphics, pictureBottomRight)
panelGraphics.Dispose()

' Set the location of the image node
pictureNode.SetLocation(New AnalysisRegion(New Rectangle(pictureTopLeft.X, _
    pictureTopLeft.Y, pictureBottomRight.X - pictureTopLeft.X, _
    pictureBottomRight.Y - pictureTopLeft.Y)))

' Serialize the image to a byte array and set ImageNode.Data to the array. 
Using stream As System.IO.MemoryStream = New System.IO.MemoryStream()

    thePictureBox.Image.Save(stream, thePictureBox.Image.RawFormat)
    pictureNode.Data = stream.ToArray()
End Using

// Add image node
ImageNode pictureNode = (ImageNode)
    theInkAnalyzer.RootNode.CreateSubNode(Microsoft.Ink.ContextNodeType.Image);

// Convert pixel coordinates to pixel coordinates
Point pictureTopLeft = thePictureBox.Location;
Point pictureBottomRight = new Point(thePictureBox.Right,
    thePictureBox.Bottom);
Graphics panelGraphics = theNotesPanel.CreateGraphics();
theInkCollector.Renderer.PixelToInkSpace(panelGraphics, ref pictureTopLeft);
theInkCollector.Renderer.PixelToInkSpace(panelGraphics, ref pictureBottomRight);
panelGraphics.Dispose();

// Set the location of the image node
pictureNode.SetLocation(new AnalysisRegion(new Rectangle(pictureTopLeft.X,
    pictureTopLeft.Y, pictureBottomRight.X - pictureTopLeft.X,
    pictureBottomRight.Y - pictureTopLeft.Y)));

// Serialize the image to a byte array and set ImageNode.Data to the array. 
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
    thePictureBox.Image.Save(stream, thePictureBox.Image.RawFormat);
    pictureNode.Data = stream.ToArray();
}

Platforms

Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.0

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