c# - 当 ChildWindow 打开 MessageBox 并关闭时，MainWindow 最小化

Question

该程序有一个主窗口，带有用于打开子窗口的按钮。当其中一个 child 显示消息框时，当我关闭 child 时，主窗口最小化。

protected void EventBtn_Click(object sender, RoutedEventArgs e)
{
    Child child = new child();
    child.Show();
    child.Owner = this;
} 

解决方案:

感谢@Oscar Martinez

child :

public partial class Child: Window
{
    public Child()
    {
        InitializeComponent();
    }

    private void button_Click(object sender, RoutedEventArgs e)
    {
        MessageBox.Show("Hello world!");
    }

    // this is what you need to add
    protected override void OnClosing(CancelEventArgs e)
    {
        this.Owner = null;
    }
}

家长:

public partial class Parent: Window
{
    public Parent()
    {
        InitializeComponent();
    }

    private void button_Click(object sender, RoutedEventArgs e)
    {
        Child child = new Child();
        child.Show();
        child.Owner = this;
    }
}

Answer 1

我有同样的行为。通过处理 Child 表单的 Closing 事件很容易解决这个问题。

child :

public partial class Child: Window
{
    public Child()
    {
        InitializeComponent();
    }
    private void button_Click(object sender, RoutedEventArgs e)
    {
        MessageBox.Show("Hello world!");
    }

// this is what you need to add
    private void Child_Closing(object sender, System.ComponentModel.CancelEventArgs e)     
    {
        this.Owner = null;
    }
}

家长:

 public partial class Parent: Window
    {
        public Parent()
        {
            InitializeComponent();
        }

    private void button_Click(object sender, RoutedEventArgs e)
    {
        Child child = new Child();
        child.Show();
        child.Owner = this;
    }
}

如果您最小化 Parent，则 Child 也会最小化。

如果关闭子项，父项不会最小化。