AnalysisWarning.BackgroundException, propriété
Mise à jour : November 2007
Exception Exception levée si une exception se produit pendant l'analyse d'arrière-plan de l'entrée manuscrite.
Espace de noms : System.Windows.Ink
Assembly : IAWinFX (dans IAWinFX.dll)
Syntaxe
'Déclaration
Public ReadOnly Property BackgroundException As Exception
'Utilisation
Dim instance As AnalysisWarning
Dim value As Exception
value = instance.BackgroundException
public Exception BackgroundException { get; }
public:
property Exception^ BackgroundException {
Exception^ get ();
}
/** @property */
public Exception get_BackgroundException()
public function get BackgroundException () : Exception
Valeur de propriété
Type : System.Exception
Exception Exception levée pendant l'analyse d'arrière-plan.
Notes
Si un Exception se produit après un appel à la méthode InkAnalyzerBaseBackgroundAnalyze(), l'exception ne peut pas être levée car elle se produit dans un thread différent et qu'il est impossible de l'intercepter. En revanche, dans le gestionnaire d'événements Results(), la propriété Status() de l'objet ResultsUpdatedEventArgs a un objet AnalysisWarning de type BackgroundException dans la propriété Warnings de sa collection. La propriété BackgroundException de cet objet AnalysisWarning contient l'exception Exception levée pendant l'analyse d'arrière-plan. En général, il est utile de lever de nouveau l'exception Exception pour qu'elle puisse être interceptée ailleurs dans votre application.
Exemples
L'exemple suivant vérifie un AnalysisWarning nommé warning pour savoir s'il est associé à une indication. Si le AnalysisWarning est de type BackgroundException, vous devez essayer d'enregistrer autant d'informations sur l'état du document que possible en levant de nouveau l'exception afin qu'elle puisse être interceptée par un gestionnaire d'exceptions. Même si aucun gestionnaire d'exceptions n'existe, un débogueur d'erreur de programme, tel que Dr. Watson, peut être appelé. Le InkAnalyzer doit être réinitialisé après avoir intercepté une exception.
' Loop through warnings
Dim warning As AnalysisWarning
For Each warning In status.Warnings
Select Case warning.WarningCode
Case AnalysisWarningCode.Aborted
message &= "Analysis operation was aborted. "
Case AnalysisWarningCode.BackgroundException
' This is a fatal warning. Throw an exception.
' First, attempt to save as much doc state as possible
' ...
' Rethrow the exception so that it can be caught by an exception
' handler (or if there is no exception handler, a program error
' debugger such as Dr. Watson can be invoked)
Throw warning.BackgroundException
Case AnalysisWarningCode.ConfirmedWithoutInkRecognition
message &= "Node was confirmed without ink recognition having been performed. "
Case AnalysisWarningCode.ContextNodeLocationNotSet
message &= "Node does not have a proper location set. "
Case AnalysisWarningCode.FactoidCoercionNotSupported
message &= "Factoid coercion failed "
If Not (warning.AnalysisHint Is Nothing) AndAlso _
Not (warning.AnalysisHint.Factoid Is Nothing) Then
message &= "for factoid: " & warning.AnalysisHint.Factoid & ". "
End If
Case AnalysisWarningCode.FactoidNotSupported
If Not (warning.AnalysisHint Is Nothing) AndAlso _
Not (warning.AnalysisHint.Factoid Is Nothing) Then
message &= warning.AnalysisHint.Factoid & " factoid was not respected. "
End If
Case AnalysisWarningCode.GuideNotSupported
message &= "Guide was not respected. "
Case AnalysisWarningCode.AddInkToRecognizerFailed
message &= "Ink could not be added to the InkRecognizer. "
Case AnalysisWarningCode.InkRecognizerInitializationFailed
message &= "The InkRecognizer failed to initialize. "
Case AnalysisWarningCode.NoMatchingInkRecognizerFound
message &= "There are no ink recognizers meeting the language or capabilities needed. "
Case AnalysisWarningCode.LanguageIdNotRespected
message &= "The language ID set on a stroke did not match the language ID of the InkRecognizer. "
Case AnalysisWarningCode.PartialDictionaryTermsNotSupported
message &= "Partial dictionary terms could not be returned from the text recognizer. "
Case AnalysisWarningCode.TextRecognitionProcessFailed
message &= "The text recognition process failed. "
Case AnalysisWarningCode.SetPrefixSuffixFailed
message &= "The text recognizer was unable to respect either the prefix or suffix. "
If Not (warning.AnalysisHint Is Nothing) AndAlso _
Not (warning.AnalysisHint.PrefixText Is Nothing) Then
message &= "Prefix: " & warning.AnalysisHint.PrefixText & ". "
End If
If Not (warning.AnalysisHint Is Nothing) AndAlso _
Not (warning.AnalysisHint.SuffixText Is Nothing) Then
message &= "Suffix: " & warning.AnalysisHint.SuffixText & ". "
End If
Case AnalysisWarningCode.WordlistNotSupported
message &= "Wordlist was not respected. "
Case AnalysisWarningCode.WordModeNotSupported
message &= "Word mode was not respected. "
End Select
' Add node id information
Dim id As Guid
For Each id In warning.GetNodeIds()
message &= "Id: " & id.ToString() & " "
Next id
' Add hint information
If Not (warning.AnalysisHint Is Nothing) Then
Dim hint As AnalysisHintNode = warning.AnalysisHint
message &= Environment.NewLine & "Hint information: "
message &= "AllowPartialDictionaryTerms"
If hint.AllowPartialDictionaryTerms Then
message &= " = true "
Else
message &= " = false "
End If
message &= "CoerceToFactoid"
If hint.CoerceToFactoid Then
message &= " = true "
Else
message &= " = false "
End If
If Not (hint.Factoid Is Nothing) Then
message &= "Factoid = " & warning.AnalysisHint.Factoid & " "
End If
message &= "Guide Drawn Box = (" _
& hint.Guide.DrawnBoxTop.ToString() & ", " _
& hint.Guide.DrawnBoxLeft.ToString() & ", " _
& hint.Guide.DrawnBoxBottom.ToString() & ", " _
& hint.Guide.DrawnBoxRight.ToString() & ", " & ")"
message &= "Guide Writing Box = (" _
& hint.Guide.WritingBoxTop.ToString() & ", " _
& hint.Guide.WritingBoxLeft.ToString() & ", " _
& hint.Guide.WritingBoxBottom.ToString() & ", " _
& hint.Guide.WritingBoxRight.ToString() & ", " & ")"
If Not (hint.Name Is Nothing) Then
message &= "Name = " & warning.AnalysisHint.Name & " "
End If
If Not (hint.PrefixText Is Nothing) Then
message &= "PrefixText = " & warning.AnalysisHint.PrefixText & " "
End If
If Not (hint.SuffixText Is Nothing) Then
message &= "SuffixText = " & warning.AnalysisHint.SuffixText & " "
End If
message &= "WordMode"
If hint.WordMode Then
message &= " = true"
Else
message &= " = false"
End If
End If
message &= Environment.NewLine
Next warning
// Loop through warnings
foreach (AnalysisWarning warning in status.Warnings)
{
switch (warning.WarningCode)
{
case AnalysisWarningCode.Aborted:
message += "Analysis operation was aborted. ";
break;
case AnalysisWarningCode.BackgroundException:
// This is a fatal warning. Throw an exception.
// First, attempt to save as much doc state as possible
// ...
// Rethrow the exception so that it can be caught by an exception
// handler (or if there is no exception handler, a program error
// debugger such as Dr. Watson can be invoked)
throw (warning.BackgroundException);
case AnalysisWarningCode.ConfirmedWithoutInkRecognition:
message += "Node was confirmed without ink recognition having been performed. ";
break;
case AnalysisWarningCode.ContextNodeLocationNotSet:
message += "Node does not have a proper location set. ";
break;
case AnalysisWarningCode.FactoidCoercionNotSupported:
message += "Factoid coercion failed ";
if (warning.AnalysisHint != null && warning.AnalysisHint.Factoid != null)
{
message += "for factoid: " + warning.AnalysisHint.Factoid + ". ";
}
break;
case AnalysisWarningCode.FactoidNotSupported:
if (warning.AnalysisHint != null && warning.AnalysisHint.Factoid != null)
{
message += warning.AnalysisHint.Factoid + " factoid was not respected. ";
}
break;
case AnalysisWarningCode.GuideNotSupported:
message += "Guide was not respected. ";
break;
case AnalysisWarningCode.AddInkToRecognizerFailed:
message += "Ink could not be added to the InkRecognizer. ";
break;
case AnalysisWarningCode.InkRecognizerInitializationFailed:
message += "The InkRecognizer failed to initialize. ";
break;
case AnalysisWarningCode.NoMatchingInkRecognizerFound:
message += "There are no ink recognizers meeting the language or capabilities needed. ";
break;
case AnalysisWarningCode.LanguageIdNotRespected:
message += "The language ID set on a stroke did not match the language ID of the InkRecognizer. ";
break;
case AnalysisWarningCode.PartialDictionaryTermsNotSupported:
message += "Partial dictionary terms could not be returned from the text recognizer. ";
break;
case AnalysisWarningCode.TextRecognitionProcessFailed:
message += "The text recognition process failed. ";
break;
case AnalysisWarningCode.SetPrefixSuffixFailed:
message += "The text recognizer was unable to respect either the prefix or suffix. ";
if (warning.AnalysisHint != null && warning.AnalysisHint.PrefixText != null)
{
message += "Prefix: " + warning.AnalysisHint.PrefixText + ". ";
}
if (warning.AnalysisHint != null && warning.AnalysisHint.SuffixText != null)
{
message += "Suffix: " + warning.AnalysisHint.SuffixText + ". ";
}
break;
case AnalysisWarningCode.WordlistNotSupported:
message += "Wordlist was not respected. ";
break;
case AnalysisWarningCode.WordModeNotSupported:
message += "Word mode was not respected. ";
break;
}
// Add node id information
foreach (Guid id in warning.GetNodeIds())
message += "Id: " + id.ToString() + " ";
// Add hint information
if (warning.AnalysisHint != null)
{
AnalysisHintNode hint = warning.AnalysisHint;
message += Environment.NewLine + "Hint information: ";
message += "AllowPartialDictionaryTerms";
if (hint.AllowPartialDictionaryTerms)
message += " = true ";
else
message += " = false ";
message += "CoerceToFactoid";
if (hint.CoerceToFactoid)
message += " = true ";
else
message += " = false ";
if (hint.Factoid != null)
message += "Factoid = " + warning.AnalysisHint.Factoid + " ";
message += "Guide Drawn Box = (" +
hint.Guide.DrawnBoxTop.ToString() + ", " +
hint.Guide.DrawnBoxLeft.ToString() + ", " +
hint.Guide.DrawnBoxBottom.ToString() + ", " +
hint.Guide.DrawnBoxRight.ToString() + ", " + ")";
message += "Guide Writing Box = (" +
hint.Guide.WritingBoxTop.ToString() + ", " +
hint.Guide.WritingBoxLeft.ToString() + ", " +
hint.Guide.WritingBoxBottom.ToString() + ", " +
hint.Guide.WritingBoxRight.ToString() + ", " + ")";
if (hint.Name != null)
message += "Name = " + warning.AnalysisHint.Name + " ";
if (hint.PrefixText != null)
message += "PrefixText = " + warning.AnalysisHint.PrefixText + " ";
if (hint.SuffixText != null)
message += "SuffixText = " + warning.AnalysisHint.SuffixText + " ";
message += "WordMode";
if (hint.WordMode)
message += " = true";
else
message += " = false";
}
message += Environment.NewLine;
}
Plateformes
Windows Vista
Le .NET Framework et le .NET Compact Framework ne prennent pas en charge toutes les versions de chaque plateforme. Pour obtenir la liste des versions prises en charge, consultez Configuration requise du .NET Framework.
Informations de version
.NET Framework
Pris en charge dans : 3.0
Voir aussi
Référence
System.Windows.Ink, espace de noms
InkAnalyzerBaseBackgroundAnalyze()