如何在 Silverlight 中以编程方式折叠 Expander？

发布于 2024-11-02 17:19:53 字数 492 浏览 1 评论 0原文

我需要能够在单击扩展器区域之外的任何位置时折叠扩展器。我想知道可以使用什么技术。任何建议都将受到高度赞赏。

Expander XAML - 将绑定设置为 isExpanded：

 <toolkit:Expander Header="Tasks" IsExpanded="{Binding IsExpanded}">

隐藏代码：

    public bool IsExpanded
    {
        get { return _isExpanded; }
        set
        {
            if (value == _isExpanded)
                return;
            _isExpanded = value;
            OnPropertyChanged("IsExpanded");
        }
    }

原文

I need to be able to collapse expander on clicking anywhere outside the expander area. I am wondering what technique can be used. Any advice is highly appreciated.

Expander XAML - set binding to isExpanded:

 <toolkit:Expander Header="Tasks" IsExpanded="{Binding IsExpanded}">

Code behind:

    public bool IsExpanded
    {
        get { return _isExpanded; }
        set
        {
            if (value == _isExpanded)
                return;
            _isExpanded = value;
            OnPropertyChanged("IsExpanded");
        }
    }

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童话里做英雄 2024-11-09 17:19:53

我假设您正在使用隐藏代码。

您可以在 Expander 的 MouseLeave & 中尝试一下吗？鼠标输入处理程序

    private void expander1_MouseLeave(object sender, System.Windows.Input.MouseEventArgs e)
    {   
        Application.Current.RootVisual.MouseLeftButtonDown += RootVisual_MouseLeftButtonDown;
    }

    void RootVisual_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        this.expander1.IsExpanded = false;
    }

    private void expander1_MouseEnter(object sender, System.Windows.Input.MouseEventArgs e)
    {
        Application.Current.RootVisual.MouseLeftButtonDown -= RootVisual_MouseLeftButtonDown;
    }

I assume you are using code behind.

Can you please try this in the Expander's MouseLeave & MouseEnter handlers

    private void expander1_MouseLeave(object sender, System.Windows.Input.MouseEventArgs e)
    {   
        Application.Current.RootVisual.MouseLeftButtonDown += RootVisual_MouseLeftButtonDown;
    }

    void RootVisual_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        this.expander1.IsExpanded = false;
    }

    private void expander1_MouseEnter(object sender, System.Windows.Input.MouseEventArgs e)
    {
        Application.Current.RootVisual.MouseLeftButtonDown -= RootVisual_MouseLeftButtonDown;
    }

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