ContextNode.Type Property

Article
10/19/2012

Gets the context node type for this ContextNode object.

Namespace: System.Windows.Ink
Assembly: IAWinFX (in IAWinFX.dll)

Syntax

'Declaration
Public ReadOnly Property Type As Guid
'Usage
Dim instance As ContextNode 
Dim value As Guid 

value = instance.Type

public Guid Type { get; }

public:
property Guid Type {
    Guid get ();
}

public function get Type () : Guid

Property Value

Type: System.Guid
The context node type for this ContextNode object.

Examples

The following example shows how to use the Type property of a ContextNode object named selectedNode. The text of a TextBox, selectedResultsTextBox, is populated differently depending on the type of node. In most cases, the recognized string is used, but for InkWord, the line's recognized string is used, and the word is selected in the TextBox.

If selectedNode.Type = ContextNodeType.WritingRegion Then 
    Dim writingRegion As WritingRegionNode = CType(selectedNode, WritingRegionNode)
    selectedResultsTextBox.Text = writingRegion.GetRecognizedString()
ElseIf selectedNode.Type = ContextNodeType.Paragraph Then 
    Dim paragraph As ParagraphNode = CType(selectedNode, ParagraphNode)
    selectedResultsTextBox.Text = paragraph.GetRecognizedString()
ElseIf selectedNode.Type = ContextNodeType.Line Then 
    Dim line As LineNode = CType(selectedNode, LineNode)
    selectedResultsTextBox.Text = line.GetRecognizedString()
ElseIf selectedNode.Type = ContextNodeType.InkWord Then 
    Dim inkWord As InkWordNode = CType(selectedNode, InkWordNode)
    Dim parentNode As ContextNode = inkWord.ParentNode
    If TypeOf parentNode Is LineNode Then 
        Dim parentLine As LineNode = CType(parentNode, LineNode)
        ' Put parent line's recognized string into the text box
        selectedResultsTextBox.Text = parentLine.GetRecognizedString()

        ' Select the text that corresponds to the ink word 
        Dim subNodes As New ContextNodeCollection(theInkAnalyzer)
        subNodes.Add(inkWord)
        Dim start As Integer 
        Dim length As Integer
        parentLine.GetTextRangeFromNodes(subNodes, start, length)
        If start >= 0 AndAlso length > 0 Then
            selectedResultsTextBox.Select(start, length)
        End If 
    End If 
ElseIf selectedNode.Type = ContextNodeType.InkDrawing Then 
    Dim drawingNode As InkDrawingNode = CType(selectedNode, InkDrawingNode)
    selectedResultsTextBox.Text = drawingNode.GetShapeName()
ElseIf selectedNode.Type = ContextNodeType.InkBullet Then 
    Dim bulletNode As InkBulletNode = CType(selectedNode, InkBulletNode)
    selectedResultsTextBox.Text = bulletNode.GetRecognizedString()
ElseIf selectedNode.Type = ContextNodeType.CustomRecognizer Then 
    Dim customRecognizer As CustomRecognizerNode = CType(selectedNode, CustomRecognizerNode)
    selectedResultsTextBox.Text = customRecognizer.GetRecognizedString()
ElseIf selectedNode.Type = ContextNodeType.Object Then 
    Dim selectedObject As ObjectNode = CType(selectedNode, ObjectNode)
    selectedResultsTextBox.Text = selectedObject.GetRecognizedString()
Else
    selectedResultsTextBox.Text = "" 
End If

if (selectedNode.Type == ContextNodeType.WritingRegion)
{
    WritingRegionNode writingRegion = (WritingRegionNode)selectedNode;
    selectedResultsTextBox.Text = writingRegion.GetRecognizedString();
}
else if (selectedNode.Type == ContextNodeType.Paragraph)
{
    ParagraphNode paragraph = (ParagraphNode)selectedNode;
    selectedResultsTextBox.Text = paragraph.GetRecognizedString();
}
else if (selectedNode.Type == ContextNodeType.Line)
{
    LineNode line = (LineNode)selectedNode;
    selectedResultsTextBox.Text = line.GetRecognizedString();
}
else if (selectedNode.Type == ContextNodeType.InkWord)
{
    InkWordNode inkWord = (InkWordNode)selectedNode;
    ContextNode parentNode = inkWord.ParentNode;
    if (parentNode is LineNode)
    {
        LineNode parentLine = (LineNode)parentNode;
        // Put parent line's recognized string into the text box
        selectedResultsTextBox.Text = parentLine.GetRecognizedString();

        // Select the text that corresponds to the ink word
        ContextNodeCollection subNodes = new ContextNodeCollection(theInkAnalyzer);
        subNodes.Add(inkWord);
        int start;
        int length;
        parentLine.GetTextRangeFromNodes(subNodes, out start, out length);
        if (start >= 0 && length > 0)
        {
            selectedResultsTextBox.Select(start, length);
        }
    }
}
else if (selectedNode.Type == ContextNodeType.InkDrawing)
{
    InkDrawingNode drawingNode = (InkDrawingNode)selectedNode;
    selectedResultsTextBox.Text = drawingNode.GetShapeName();
}
else if (selectedNode.Type == ContextNodeType.InkBullet)
{
    InkBulletNode bulletNode = (InkBulletNode)selectedNode;
    selectedResultsTextBox.Text = bulletNode.GetRecognizedString();
}
else if (selectedNode.Type == ContextNodeType.CustomRecognizer)
{
    CustomRecognizerNode customRecognizer = (CustomRecognizerNode)selectedNode;
    selectedResultsTextBox.Text = customRecognizer.GetRecognizedString();
}
else if (selectedNode.Type == ContextNodeType.Object)
{
    ObjectNode selectedObject = (ObjectNode)selectedNode;
    selectedResultsTextBox.Text = selectedObject.GetRecognizedString();
}
else
{
    selectedResultsTextBox.Text = "";
}

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

Share via