相关疑难解决方法(0)

这是我的代码:

private static Stopwatch _stopwatch;

static void PrintException(Exception ex)
{
    Console.WriteLine(_stopwatch.Elapsed);
    Console.WriteLine(ex);
}

static void ThrowException1()
{
    throw new InvalidAsynchronousStateException();
}

static void ThrowException2()
{
    throw new NullReferenceException();
}

static async Task ExecuteTask1()
{
    await Task.Delay(1000);
    ThrowException1();
}

static async Task ExecuteTask2()
{
    await Task.Delay(2000);
    ThrowException2();
}

static async Task Execute()
{
    var t1 = ExecuteTask1();
    var t2 = ExecuteTask2();

    try
    {
        await t2;
    }
    catch (NullReferenceException ex)
    {
        // the NullReferenceException will be captured
        Console.WriteLine("==============");
        PrintException(ex);
    }
}

static …