C# 线程异常 捕获

要想在主线程捕获其他线程异常，需阻塞主线程，等所有线程执行结束，方可捕获异常；
否则无法捕获异常；

下面这种方式，线程抛出异常，代码走不进catch，catch无法捕获异常

static void GetThreadException1()
{
    try
    {
        Task.Run(() =>
        {
            Console.WriteLine("dosomething");
            throw new Exception("test exception");
        });

        Task.Run(() => Console.WriteLine("dosomething else"));
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex);
    }
}

下面这种，catch可以捕获到线程异常信息

static void GetThreadException2()
{
    try
    {
        var taskList = new List();
        taskList.Add( Task.Run(() =>
        {
            Console.WriteLine("dosomething");
            throw new Exception("test exception");
        }));

       taskList.Add( Task.Run(() => Console.WriteLine("dosomething else")));

        Task.WaitAll(taskList.ToArray());
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex);
    }
}