c# - 关闭 C# WPF 应用程序中的所有 Windows

Question

我在 VS2013Express 中创建了一个小 WPF 应用程序，我遇到了一个小问题。你看，一共有三个窗口，MainWindow、LatAndLongDialog、TimeCitiesDialog。

`LatAndLongDialog` 和 `TimeCitiesDialog` 从 MainWindow 打开(点击按钮)。我希望在“MainWindow”上调用“Closed()”事件时关闭所有其他窗口。MainWindow.xaml.cs 上的代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace GlobalTime_ELITE_for_WPF
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            UserDescText.Content =
            "Select a TimeCity or enter the latitude and longitude in \n" +
            "to view the World Time there. Or, select another one of the\n" +
            "options below to do that. Go to Help by clicking on the link\n" +
            "on the upper-right corner of the window to view everything you\n" +
            "can do.";
            this.Closed += CloseOff;
        }
        private void OpenTimeCitiesDialog(Object Sender, EventArgs E)
        {
            TimeCitiesDialog ObjectReference = new TimeCitiesDialog();
            ObjectReference.Show();
        }
        private void OpenLatAndLongDialog(Object Sender, EventArgs E)
        {
            LatAndLongDialog ObjectReference = new LatAndLongDialog();
            ObjectReference.Show();
        }
        private void CloseOff(Object Sender, EventArgs E)
        {
            this.Close();
            TimeCitiesDialog tcdor = new TimeCitiesDialog();
            LatAndLongDialog laldor = new LatAndLongDialog();
        }
    }
}

如何关闭它们？请帮忙!

Answer 1

关闭 WPF 应用程序的正确方法是使用 Application.Current.Shutdown() .这将关闭所有打开的 Window，引发一些事件以便可以运行清理代码，并且无法取消。 Environment.Exit()即使其他线程正在执行，也会立即终止应用程序。

您还应该考虑设置 Owner在非主 Window 上。该行为可能更像您对 Z 顺序、最小化和最大化的预期。作为一个额外的好处，拥有的窗口将在所有者 Window 关闭时自动关闭。