ValuePattern.ValueProperty Champ

Définition

Espace de noms:

System.Windows.Automation

Assembly:

UIAutomationClient.dll

Identifie la propriété Value.

public: static initonly System::Windows::Automation::AutomationProperty ^ ValueProperty;

public static readonly System.Windows.Automation.AutomationProperty ValueProperty;

 staticval mutable ValueProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly ValueProperty As AutomationProperty 

Valeur de champ

AutomationProperty

Exemples

Dans l’exemple suivant, un ValuePattern objet obtenu à partir d’un contrôle cible est passé dans une fonction qui récupère les valeurs de propriété actuelles ValuePattern .

///--------------------------------------------------------------------
/// <summary>
/// Gets the current property values from target.
/// </summary>
/// <param name="valuePattern">
/// A ValuePattern control pattern obtained from 
/// an automation element representing a target control.
/// </param>
/// <param name="automationProperty">
/// The automation property of interest.
/// </param>
///--------------------------------------------------------------------
private object GetValueProperty(
    ValuePattern valuePattern,
    AutomationProperty automationProperty)
{
    if (valuePattern == null || automationProperty == null)
    {
        throw new ArgumentNullException("Argument cannot be null.");
    }

    if (automationProperty.Id ==
        ValuePattern.ValueProperty.Id)
    {
        return valuePattern.Current.Value;
    }
    return null;
}

'''--------------------------------------------------------------------
''' <summary>
''' Gets the current property values from target.
''' </summary>
''' <param name="valuePattern">
''' A ValuePattern control pattern obtained from 
''' an automation element representing a target control.
''' </param>
''' <param name="automationProperty">
''' The automation property of interest.
''' </param>
'''--------------------------------------------------------------------
Private Function GetValueProperty( _
ByVal valuePattern As ValuePattern, _
ByVal automationProperty As AutomationProperty) As Object
    If (valuePattern Is Nothing Or automationProperty Is Nothing) Then
        Throw New ArgumentNullException("Argument cannot be null.")
    End If

    If automationProperty.Id = valuePattern.ValueProperty.Id Then
        Return valuePattern.Current.Value
    End If
    Return Nothing

End Function 'GetValueProperty

Remarques

Cet identificateur est utilisé par UI Automation applications clientes. UI Automation fournisseurs doivent utiliser le champ équivalent dans ValuePatternIdentifiers.

Voir aussi

• TextPattern Insert Text Sample