相关疑难解决方法(0)

我对如何使用条件Continuations的任务感到困惑.

如果我有一个任务,然后我想继续处理成功和错误的任务,然后等待那些完成.

void FunctionThrows() {throw new Exception("faulted");}

static void MyTest()
{

    var taskThrows = Task.Factory.StartNew(() => FunctionThrows());

    var onSuccess = taskThrows.ContinueWith(
                          prev => Console.WriteLine("success"), 
                          TaskContinuationOptions.OnlyOnRanToCompleted);

    var onError = taskThrows.ContinueWith(
                          prev => Console.WriteLine(prev.Exception),
                          TaskContinuationOptions.OnlyOnFaulted);

    //so far, so good



    //this throws because onSuccess was cancelled before it was started
    Task.WaitAll(onSuccess, onError);
}

这是执行任务成功/失败分支的首选方式吗？另外,我应该如何加入所有这些任务,假设我已经创建了一长串的延续,每个延续都有自己的错误处理.

  //for example
  var task1 = Task.Factory.StartNew(() => ...)
  var task1Error = task1.ContinueWith(  //on faulted
  var task2  = task1.ContinueWith(      //on success
  var task2Error = task2.ContinueWith(  //on faulted
  var task3 = …