ValuePattern.ValueProperty フィールド

定義

Value プロパティを識別します。Identifies the Value property.

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 

フィールド値

AutomationProperty

次の例では、 ValuePattern ターゲットコントロールから取得したオブジェクトが、現在のプロパティ値を取得する関数に渡され ValuePattern ます。In the following example, a ValuePattern object obtained from a target control is passed into a function that retrieves the current ValuePattern property values.

///--------------------------------------------------------------------
/// <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    

注釈

この識別子は、UI オートメーションクライアントアプリケーションによって使用されます。This identifier is used by UI Automation client applications. UI オートメーションプロバイダーでは、の同等のフィールドを使用する必要があり ValuePatternIdentifiers ます。UI Automation providers should use the equivalent field in ValuePatternIdentifiers.

適用対象

こちらもご覧ください