ThreadExceptionEventHandler怎么用？如何捕获UI线程异常？

using System;
using System.Threading;
using System.Windows.Forms;

public class Example
{
    public static void Main()
    {
        // 订阅 Application.ThreadException 事件
        Application.ThreadException += new ThreadExceptionEventHandler(Application_ThreadException);

        // 设置未处理异常模式
        Application.SetUnhandledExceptionMode(UnhandledExceptionMode.CatchException);

        // 运行应用程序
        Application.Run(new MyForm());
    }

    static void Application_ThreadException(object sender, ThreadExceptionEventArgs e)
    {
        // 处理异常
        Exception ex = e.Exception;
        MessageBox.Show("发生未处理的异常：\n" + ex.Message + "\n\n" + ex.StackTrace, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);

        // 可以选择是否退出应用程序
        // Application.Exit();
    }
}

public class MyForm : Form
{
    private Button button1;

    public MyForm()
    {
        button1 = new Button();
        button1.Text = "抛出异常";
        button1.Click += Button1_Click;
        Controls.Add(button1);
    }

    private void Button1_Click(object sender, EventArgs e)
    {
        // 故意抛出一个异常
        throw new Exception("这是一个测试异常。");
    }
}

ThreadExceptionEventHandler

Application.ThreadException

UnhandledExceptionEventHandler

AppDomain.CurrentDomain.UnhandledException

ThreadExceptionEventHandler

UnhandledExceptionEventHandler

UnhandledExceptionEventHandler

ThreadExceptionEventHandler

async/await

await

try-catch

async Task MyAsyncMethod()
{
    try
    {
        // 异步操作
        await Task.Delay(1000);
        throw new Exception("异步操作中的异常");
    }
    catch (Exception ex)
    {
        // 处理异常
        MessageBox.Show("异步操作发生异常：\n" + ex.Message);
    }
}

private async void Button_Click(object sender, EventArgs e)
{
    await MyAsyncMethod();
}

Task.ContinueWith

Task

Exception

Task.Run(() =>
{
    // 异步操作
    throw new Exception("异步操作中的异常");
})
.ContinueWith(task =>
{
    if (task.IsFaulted)
    {
        // 处理异常
        Exception ex = task.Exception;
        MessageBox.Show("异步操作发生异常：\n" + ex.InnerException.Message);
    }
}, TaskScheduler.FromCurrentSynchronizationContext()); // 确保在 UI 线程上执行

ThreadExceptionEventHandler