RecognitionResult.TopString Property

Článek
10/07/2012

Gets the result text for the TopAlternate property.

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

Syntax

'Declaration
Public ReadOnly Property TopString As String
'Usage
Dim instance As RecognitionResult 
Dim value As String 

value = instance.TopString

public string TopString { get; }

public:
property String^ TopString {
    String^ get ();
}

public function get TopString () : String

Property Value

Type: System.String
The result text for the TopAlternate property.

Remarks

Note

The result text for the TopString property will change if a call to the ModifyTopAlternate method causes a change to the TopAlternate property.

Examples

In this example, synchronous recognition is handled in response to a user action such as clicking on a menu item or a button. First, the Strokes collection of a RecognizerContext object is assigned from the Strokes collection associated with an InkOverlay object, and checked for stroke count. If the Strokes collection contains at least one Stroke object, the recognition process begins with a call to the Recognize method. If recognition is successful and the TopConfidence (if supported) does not equal RecognitionConfidencePoor (i.e. it is Intermediate or Strong), the TopString is displayed by adding it to a list box.

' assign strokes collection from the collected strokes 
Me.mRecognizerContext.Strokes = Me.mInkOverlay.Ink.Strokes
' check stroke count. Recognize() will throw exception if no strokes 
If (Me.mRecognizerContext.Strokes.Count > 0) Then 
    Dim status As RecognitionStatus
    ' perform the recognition 
    Dim rResult As RecognitionResult = Me.mRecognizerContext.Recognize(status)
    ' see if the recognizer used supports confidence levels 
    Dim rSupportsConfidence As Boolean = RecognizerSupportsConfidence(mRecognizerContext.Recognizer)
    ' check status and TopConfidence (if supported) 
    If (RecognitionStatus.NoError = status And _
        ((rSupportsConfidence And _
         rResult.TopConfidence <> RecognitionConfidence.Poor) Or _
         Not rSupportsConfidence)) Then
        listBoxRecognitionResults.Items.Add(rResult.TopString)
    End If 
End If

// assign strokes collection from the collected strokes 
this.mRecognizerContext.Strokes = this.mInkOverlay.Ink.Strokes;
// check stroke count. Recognize() will throw exception if no strokes 
if (this.mRecognizerContext.Strokes.Count > 0)
{
    RecognitionStatus status;
    // perform the recognition
    RecognitionResult rResult = this.mRecognizerContext.Recognize(out status);
    // see if the recognizer used supports confidence levels 
    bool rSupportsConfidence = RecognizerSupportsConfidence(mRecognizerContext.Recognizer);
    // check status and TopConfidence (if supported) 
    if (RecognitionStatus.NoError == status &&
        ((rSupportsConfidence &&
         rResult.TopConfidence != RecognitionConfidence.Poor) ||
         !rSupportsConfidence))
    {
        listBoxRecognitionResults.Items.Add(rResult.TopString);
    }
}

The following example shows the helper method used to determine if the Recognizer supports confidence levels.

Private Function RecognizerSupportsConfidence(ByVal pRecognizer As Recognizer) As Boolean 
    For Each G As Guid In pRecognizer.SupportedProperties
        If G = RecognitionProperty.ConfidenceLevel Then 
            Return True 
        End If 
    Next 
    Return False 
End Function

private bool RecognizerSupportsConfidence(Recognizer pRecognizer)
{
    foreach (Guid G in pRecognizer.SupportedProperties)
    {
        if (G == RecognitionProperty.ConfidenceLevel)
        {
            return true;
        }
    }
    return false;
}

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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