ValuePattern.IsReadOnlyProperty 欄位

定義

命名空間:

System.Windows.Automation

組件:

UIAutomationClient.dll

識別 IsReadOnly 屬性。

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

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

 staticval mutable IsReadOnlyProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly IsReadOnlyProperty As AutomationProperty 

欄位值

AutomationProperty

範例

在下列範例中，根元素會傳遞至函式，此函式會傳回根子系的UI自動化專案集合，並滿足一組屬性條件。

///--------------------------------------------------------------------
/// <summary>
/// Finds all automation elements that satisfy 
/// the specified condition(s).
/// </summary>
/// <param name="targetApp">
/// The automation element from which to start searching.
/// </param>
/// <returns>
/// A collection of automation elements satisfying 
/// the specified condition(s).
/// </returns>
///--------------------------------------------------------------------
private AutomationElementCollection FindAutomationElement(
    AutomationElement targetApp)
{
    if (targetApp == null)
    {
        throw new ArgumentException("Root element cannot be null.");
    }

    PropertyCondition conditionIsReadOnly =
        new PropertyCondition(
        ValuePattern.IsReadOnlyProperty, false);

    return targetApp.FindAll(
        TreeScope.Descendants, conditionIsReadOnly);
}

'''--------------------------------------------------------------------
''' <summary>
''' Finds all automation elements that satisfy 
''' the specified condition(s).
''' </summary>
''' <param name="targetApp">
''' The automation element from which to start searching.
''' </param>
''' <returns>
''' A collection of automation elements satisfying 
''' the specified condition(s).
''' </returns>
'''--------------------------------------------------------------------
Private Function FindAutomationElement( _
ByVal targetApp As AutomationElement) As AutomationElementCollection
    If targetApp Is Nothing Then
        Throw New ArgumentException("Root element cannot be null.")
    End If

    Dim conditionIsReadOnly As New PropertyCondition( _
    ValuePattern.IsReadOnlyProperty, False)

    Return targetApp.FindAll(TreeScope.Descendants, conditionIsReadOnly)

End Function 'FindAutomationElement

備註

使用者介面自動化用戶端應用程式會使用此標識碼。 使用者介面自動化提供者應該使用 中的 ValuePatternIdentifiers對等欄位。

控制項應該IsEnabledProperty設定為 true ，並在IsReadOnlyProperty客戶端嘗試呼叫 SetValue之前將其設定為 false 。

另請參閱

• TextPattern 插入文字樣本