C#对Task中的异常进行捕获的几种常见方法

using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main()
    {
        try
        {
            await Task.Run(() =>
            {
                // 模拟异常抛出
                throw new Exception("An error occurred in the task.");
            });
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Caught exception: {ex.Message}");
        }
    }
}

using System;
using System.Threading.Tasks;

class Program
{
    static void Main()
    {
        Task.Run(() =>
        {
            // 模拟异常抛出
            throw new Exception("An error occurred in the task.");
        }).ContinueWith(task =>
        {
            if (task.IsFaulted)
            {
                // 处理异常
                foreach (var ex in task.Exception.InnerExceptions)
                {
                    Console.WriteLine($"Caught exception: {ex.Message}");
                }
            }
        });

        // 等待任务完成，这里只是为了防止程序提前退出，在实际应用中可能有不同的等待方式
        Console.ReadLine();
    }
}

using System;
using System.Threading.Tasks;

class Program
{
    static async Task Main()
    {
        Task task1 = Task.Run(() =>
        {
            throw new Exception("Error in task 1");
        });

        Task task2 = Task.Run(() =>
        {
            // 正常执行
        });

        try
        {
            await Task.WhenAll(task1, task2);
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Caught exception: {ex.Message}");
        }
    }
}

using System;
using System.Threading.Tasks;

class Program
{
    static void Main()
    {
        TaskScheduler.UnobservedTaskException += (sender, e) =>
        {
            foreach (var ex in e.Exception.InnerExceptions)
            {
                Console.WriteLine($"Unobserved exception: {ex.Message}");
            }
            // 标记为已观察，避免程序崩溃
            e.SetObserved();
        };

        Task.Run(() =>
        {
            throw new Exception("This is an unobserved exception.");
        });

        // 给任务一些时间抛出异常
        System.Threading.Thread.Sleep(1000);
    }
}