AutomationElement.Current 属性

定义

命名空间:

System.Windows.Automation

程序集:

UIAutomationClient.dll

获取 AutomationElement 的当前属性值。

public:
 property System::Windows::Automation::AutomationElement::AutomationElementInformation Current { System::Windows::Automation::AutomationElement::AutomationElementInformation get(); };

public System.Windows.Automation.AutomationElement.AutomationElementInformation Current { get; }

member this.Current : System.Windows.Automation.AutomationElement.AutomationElementInformation

Public ReadOnly Property Current As AutomationElement.AutomationElementInformation

属性值

AutomationElement.AutomationElementInformation

一个包含当前属性值的结构。

例外

ElementNotAvailableException

AutomationElement 的 UI 不再存在。

示例

以下示例演示如何 Current 使用该属性检索列表中选定的项的名称。

/// <summary>
/// Handles ElementSelected events by showing a message.
/// </summary>
/// <param name="src">Object that raised the event; in this case, a list item.</param>
/// <param name="e">Event arguments.</param>
private void OnSelect(object src, AutomationEventArgs e)
{
    // Get the name of the item, which is equivalent to its text.
    AutomationElement element = src as AutomationElement;
    if (element != null)
    {
        Console.WriteLine(element.Current.Name + " was selected.");
    }
}

''' <summary>
''' Handles ElementSelected events by showing a message.
''' </summary>
''' <param name="src">Object that raised the event; in this case, a list item.</param>
''' <param name="e">Event arguments.</param>
Private Sub OnSelect(ByVal src As Object, ByVal e As AutomationEventArgs)
    ' Get the name of the item, which is equivalent to its text.
    Dim element As AutomationElement = DirectCast(src, AutomationElement)
    If (element IsNot Nothing) Then
        Console.WriteLine(element.Current.Name + " was selected.")
    End If

End Sub

注解

UI 自动化属性的访问器表示为返回Current的结构的属性。 无需检索结构;可以直接访问其成员，如以下示例所示。 有关可用属性及其使用的具体信息，请参阅 AutomationElement.AutomationElementInformation。

若要获取此元素上UI 自动化属性的缓存值，请使用该Cached属性。

另请参阅

• UI 自动化属性概述