Question

我有主窗口，我打开了一个用户控件child1，并在该用户控件中有一些文本框和按钮。

当我点击该按钮时，我正在用户控件中打开用户控件名称child2，child2有关闭按钮，点击后我要关闭当前用户控件。

Answer 1

假设您使用Popup课程打开UserControl 关闭child1时，您可以关闭child2，如下所示：

MainWindow.xaml.cs

//Opens the child1 UserControl from MainWindow
private void button_Click(object sender, RoutedEventArgs e)
{
    UserControl1 child1 = new UserControl1();
    Popup p = new Popup();
    child1.ParentPopup = p;
    p.Child = child1;
    p.IsOpen = true;
}

UserControl1.xaml.cs

public Popup ParentPopup { get; set; }
public UserControl1()
{
    InitializeComponent();
}

//Opens the child2 UserControl from child1 UserControl
private void button_Click(object sender, RoutedEventArgs e)
{
    UserControl2 child2 = new UserControl2();
    Popup p = new Popup();
    child2.Unloaded += Child2_Unloaded;
    child2.ParentPopup = p;
    p.Child = child2;
    p.IsOpen = true;
}

//Closes the child1 UserControl when child2 is closed
private void Child2_Unloaded(object sender, RoutedEventArgs e)
{
   ParentPopup.IsOpen = false;
}

UserControl2.xaml.cs

public Popup ParentPopup { get; set; }

public UserControl2()
{
    InitializeComponent();
}

//Closes the child2 UserControl
private void button_Click(object sender, RoutedEventArgs e)
{
    ParentPopup.IsOpen = false;
}

如何关闭用户控件，它是从另一个用户控件的按钮弹出打开，单击WPF中的事件

1 个答案: