ImageNode.Data 属性

获取或设置 ImageNode 对象的应用程序定义的数据。

命名空间：  Microsoft.Ink
程序集：  Microsoft.Ink.Analysis（在 Microsoft.Ink.Analysis.dll 中）

语法

声明
Public Property Data As Object
用法
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);
}

/** @property */
public Object get_Data()
/** @property */
public  void set_Data(Object value)

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

属性值

类型：System.Object
ImageNode 对象的应用程序定义的数据。

备注

使用此属性可将您自己的数据添加到 ImageNode 对象。

示例

下面的示例将一个 ImageNode 对象添加到 PictureBox 控件 thePictureBox 的 InkAnalyzer (theInkAnalyzer)。它将 PictureBox 控件的位置从像素坐标转换为墨迹坐标。另外，还将 ImageNode 对象的 Data 属性设置为 PictureBox 的 Image 属性。

' 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();
}

平台

Windows Vista

.NET Framework 和 .NET Compact Framework 并不是对每个平台的所有版本都提供支持。有关支持的版本的列表，请参见.NET Framework 系统要求。

版本信息

.NET Framework

受以下版本支持：3.0

另请参见

参考

ImageNode 类

ImageNode 成员

Microsoft.Ink 命名空间