C＃-Backgroundworker和REST服務

Question

我有一個使用backgroundworker調用類的Web服務，當我返回狀態200時，我在REST客戶端中收到此異常：

An asynchronous module or handler completed while an asynchronous operation was still pending.

我已經通過以下方式實現了我的服務：

    [Route("/service")]
    [HttpPost]
    public HttpResponseMessage generate(String value)
    {           
        Service service = new Service();
        service.Execute();
        return Request.CreateResponse(HttpStatusCode.OK);          
    }

這是我與backgroundworker一起上的課：

public class Service
{

    private BackgroundWorker worker = new BackgroundWorker();


    public void Execute(Client client)
    {
        worker = new BackgroundWorker
        {
            WorkerReportsProgress = true,
            WorkerSupportsCancellation = true
        };

        worker.DoWork += (obj, e) => GenerateContent(client);
        worker.RunWorkerCompleted += (obj, e) => GenerationCompleted(client.Token);


        worker.RunWorkerAsync();
    }

    private void GenerateContent(Client client)
    {
       //doStuff
    }


    private void GenerationCompleted(String token)
    {
        // TODO 
        Console.WriteLine("Finished");

    }
}

此實現有什么問題？

謝謝

Answer 1

您的Execute方法將在啟動BackgroundWorker之后立即返回（而不是等到GenerateContent和GenerationCompleted運行之后）。 因此，當GenerateContent仍在工作時，您的服務將向客戶端返回HTTP 200結果。