AutomationProperties.GetFlowsFrom(DependencyObject) 方法

定義

命名空間:

Windows.UI.Xaml.Automation

取得自動化專案的清單，這個清單會建議指定之自動化專案之前的讀取順序。

public:
 static IVector<DependencyObject ^> ^ GetFlowsFrom(DependencyObject ^ element);

 static IVector<DependencyObject> GetFlowsFrom(DependencyObject const& element);

public static IList<DependencyObject> GetFlowsFrom(DependencyObject element);

function getFlowsFrom(element)

Public Shared Function GetFlowsFrom (element As DependencyObject) As IList(Of DependencyObject)

參數

element

DependencyObject

要取得先前讀取順序元素的專案。

傳回

IVector<DependencyObject>

IList<DependencyObject>

自動化專案清單，這個清單會建議 元素參數所 指定之自動化元素之前的讀取順序。

Windows 需求

裝置系列	Windows 10 Anniversary Edition (已於 10.0.14393.0 引進)
API contract	Windows.Foundation.UniversalApiContract (已於 v3.0 引進)

範例

<StackPanel>
    <Button x:Name="first">First</Button>
    <Button x:Name="third">Third</Button>
    <Button x:Name="second">Second</Button>
    <Button x:Name="fourth">Fourth</Button>
</StackPanel>

public sealed partial class MainPage : Page
{
    public MainPage()
    {
        this.InitializeComponent();

        // Override the default flow for next/previous items in 
        // UI Automation to differ from the sequence of items 
        // declared in markup
        FlowBetween(first, second);
        FlowBetween(second, third);
        FlowBetween(third, fourth);
    }

    public void FlowBetween(UIElement fromElement, UIElement toElement)
    {
        // Set up the flow as bi-directional so that moving next/previous is
        // consistent.
        var flowsToList = AutomationProperties.GetFlowsTo(fromElement);
        var flowsFromList = AutomationProperties.GetFlowsFrom(toElement);

        flowsToList.Add(toElement);
        flowsFromList.Add(fromElement);
    }
}

備註

取得清單，然後呼叫 Add 方法以新增專案。

重要

修改流程時，請小心不要建立使用者卡在流覽迴圈中的情況，如果他們只使用鍵盤，他們就無法逸出。