AutomationElement.FindAll(TreeScope, Condition) 方法

public:
 System::Windows::Automation::AutomationElementCollection ^ FindAll(System::Windows::Automation::TreeScope scope, System::Windows::Automation::Condition ^ condition);

public System.Windows.Automation.AutomationElementCollection FindAll(System.Windows.Automation.TreeScope scope, System.Windows.Automation.Condition condition);

member this.FindAll : System.Windows.Automation.TreeScope * System.Windows.Automation.Condition -> System.Windows.Automation.AutomationElementCollection

Public Function FindAll (scope As TreeScope, condition As Condition) As AutomationElementCollection

參數

傳回

一組滿足指定條件的物件。 若無匹配，則會回傳一個空集合。

範例

以下範例展示了如何使用 FindAll 視窗中所有啟用的按鈕。

/// <summary>
/// Finds all enabled buttons in the specified window element.
/// </summary>
/// <param name="elementWindowElement">An application or dialog window.</param>
/// <returns>A collection of elements that meet the conditions.</returns>
AutomationElementCollection FindByMultipleConditions(
    AutomationElement elementWindowElement)
{
    if (elementWindowElement == null)
    {
        throw new ArgumentException();
    }
    Condition conditions = new AndCondition(
      new PropertyCondition(AutomationElement.IsEnabledProperty, true),
      new PropertyCondition(AutomationElement.ControlTypeProperty, 
          ControlType.Button)
      );

    // Find all children that match the specified conditions.
    AutomationElementCollection elementCollection = 
        elementWindowElement.FindAll(TreeScope.Children, conditions);
    return elementCollection;
}

''' <summary>
''' Finds all enabled buttons in the specified window element.
''' </summary>
''' <param name="elementWindowElement">An application or dialog window.</param>
''' <returns>A collection of elements that meet the conditions.</returns>
Function FindByMultipleConditions(ByVal elementWindowElement As AutomationElement) As AutomationElementCollection
    If elementWindowElement Is Nothing Then
        Throw New ArgumentException()
    End If
    Dim conditions As New AndCondition(New PropertyCondition(AutomationElement.IsEnabledProperty, True), New PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Button))

    ' Find all children that match the specified conditions.
    Dim elementCollection As AutomationElementCollection = elementWindowElement.FindAll(TreeScope.Children, conditions)
    Return elementCollection

End Function 'FindByMultipleConditions

備註

搜尋範圍相對於方法被呼叫的元素而定。 元素依照在樹中遇到的順序回傳。

在桌面搜尋頂層視窗時，務必在 中指定 Childrenscope，而非 Descendants。 搜尋桌面整個子樹可能會遍歷數千個項目，導致堆疊溢位。

如果你的客戶端應用程式可能會在自己的使用者介面中尋找元素，你必須在獨立的執行緒中呼叫所有 使用者介面自動化。

另請參閱

• FindFirst(TreeScope, Condition)
• 取得使用者介面自動化元素
• 使用者介面自動化 執行緒問題