插入 while true 循环时程序没有启动？

Question

我想制作一个程序，如果启动按钮被激活，它会打印 "Ah"，我试过这个：

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 Spam_Spammer
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            while (true)
            {
                if (start.IsEnabled == false)
                {
                    System.Diagnostics.Debug.WriteLine("Ah");
                }
            }
        }
        private void Button_Click(object sender, RoutedEventArgs e)
        {
            start.IsEnabled = false;
            stop.IsEnabled = true;
            check.IsEnabled = false;
            spam_text.IsEnabled = false;
            endpoint.IsEnabled = false;
        }

        private void Stop_Click(object sender, RoutedEventArgs e)
        {
            start.IsEnabled = true;
            stop.IsEnabled = false;
            check.IsEnabled = true;
            spam_text.IsEnabled = true;
            endpoint.IsEnabled = true;
        }
    }
}

但是当我启动程序时，看起来程序启动了，只是实际的UI不在这里？有任何修复吗？

What happens when I launch it

What it is supposed to launch

Answer 1

window 无法正常打开，因为它从未离开其构造函数。您可以通过单击按钮运行作为 Task 的代码，这样它就不会阻塞 UI 线程。

public partial class MainWindow : Window
{
    static volatile bool running = false;
    public MainWindow()
    {
        InitializeComponent();
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        if (running)
            return;

        running = true;
        Task.Run(() =>
        {
            while (running)
            {
                Debug.WriteLine("Running");
            }
        });
    }

    private void stop_Click(object sender, RoutedEventArgs e)
    {
        running = false;
    }
}

请注意 Task.Run() returns 几乎立即（因此让调用方法完成）但任务本身将继续运行ning。这样您也不必完全禁用 UI 元素。

Task.Run docs

插入 while true 循环时程序没有启动？

Program doesn't launch when while true loop is inserted?

c#

wpf

infinite-loop

freeze