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  • wpf 控件回车事件中调用tab实现方法

    一般普通控件:

    在主窗体(MianWindow)窗体中重写OnKeyDown事件

    protected override void OnKeyDown(KeyEventArgs e)
    {

    if (e.Key == Key.Enter)
    { // MoveFocus takes a TraveralReqest as its argument.
    TraversalRequest request = new TraversalRequest(FocusNavigationDirection.Next);

    // Gets the element with keyboard focus.
    UIElement elementWithFocus = Keyboard.FocusedElement as UIElement;

    // Change keyboard focus.
    if (elementWithFocus != null)
    {
    elementWithFocus.MoveFocus(request);
    }
    e.Handled = true;
    }
    base.OnKeyDown(e);

    }

    特殊的控件,如DatePicker控件上面事件是不会响应的,要自己在App.xaml.cs文件中重写OnStartup事件,并且重写注册键盘按下去事件

    protected override void OnStartup(StartupEventArgs e)
    {
    base.OnStartup(e);
    EventManager.RegisterClassHandler(typeof(DatePicker),
    DatePicker.PreviewKeyDownEvent,
    new KeyEventHandler(DatePicker_PreviewKeyDown));
    }

    private void DatePicker_PreviewKeyDown(object sender, KeyEventArgs e)
    {

    if (e.Key == Key.Enter)
    { // MoveFocus takes a TraveralReqest as its argument.
    TraversalRequest request = new TraversalRequest(FocusNavigationDirection.Next);

    // Gets the element with keyboard focus.
    UIElement elementWithFocus = Keyboard.FocusedElement as UIElement;

    // Change keyboard focus.
    if (elementWithFocus != null)
    {
    elementWithFocus.MoveFocus(request);
    }
    e.Handled = true;
    }

    }

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  • 原文地址:https://www.cnblogs.com/BeyondWang/p/3965970.html
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