Question

这可能是一个愚蠢的问题，因为我对我在这里使用的所有技术（C＃，.NET和SOAP）都是新手。反正可能无法做我想做的事。

我有一个异步SOAP调用（从WSDL生成的代码），我试图改变这种方式，在我的库中，我实际上是多次调用多个不同的Web服务器，然后聚合结果返回给来电者。问题是异步SOAP调用的SendOrPostCallback方法需要使用InvokeCompletedEventArgs的参数。我无法构造这个，因为构造函数被声明为internal。因此，虽然我可以隐藏我正在内部执行的操作，并在我正在执行的操作完成时调用回调，但我无法将结果返回给调用者。有什么建议吗？

旧代码：

public void getStatusesAsync(RequestId[] requestIds, object userState)
{
  if ((this.getStatusesOperationCompleted == null))
  {
    this.getStatusesOperationCompleted = new System.Threading.SendOrPostCallback(this.OngetStatusesOperationCompleted);
  }
  this.InvokeAsync("getStatuses", new object[] {
                    requestIds}, this.getStatusesOperationCompleted, userState);
}

private void OngetStatusesOperationCompleted(object arg)
{
  if ((this.getStatusesCompleted != null))
  {
    System.Web.Services.Protocols.InvokeCompletedEventArgs invokeArgs = ((System.Web.Services.Protocols.InvokeCompletedEventArgs)(arg));
    this.getStatusesCompleted(this, new getStatusesCompletedEventArgs(invokeArgs.Results, invokeArgs.Error, invokeArgs.Cancelled, invokeArgs.UserState));
  }
}

新守则：

public void getStatusesAsync(RequestId[] requestIds, object userState)
{
  if ((this.getStatusesOperationCompleted == null))
  {
    this.getStatusesOperationCompleted = new System.Threading.SendOrPostCallback(this.OngetStatusesOperationCompleted);
  }
  asyncExecuteMultipleSoapCalls("getStatuses", new object[] { requestIds}, this.getStatusesOperationCompleted, userState);
}

private System.IAsyncResult asyncExecuteMultipleSoapCalls(string methodName, object[] args, System.Threading.SendOrPostCallback callback, object asyncState)
{
  Thread backgroundSoapCalls = new Thread(new ParameterizedThreadStart(asyncThreadRun));
  object[] threadArgs = new object[] { methodName, args, callback, asyncState };
  backgroundSoapCalls.Start(threadArgs);
  return null;//How to return AsyncResult?
}

private RequestStatus[] multiSoapCallResults = null;

private void asyncThreadRun(object args)
{
  string methodName = (string)(((object[])args)[0]);
  object[] methodArgs = (object[])(((object[])args)[1]);
  System.Threading.SendOrPostCallback methodCallback = (System.Threading.SendOrPostCallback)(((object[])args)[2]);
  object asyncState = (((object[])args)[3]);

  //To make a long story short, I'm using this thread to execute synchronous
  //SOAP calls, then call the event.  The reason is that different requestIds
  //in the passed in array may reside on different Web Servers.  Hopefully,
  //this will work similarly to the original Asynchronous call
  multiSoapCallResults = executeMultipleSoapCalls(methodName, methodArgs);

  //Now that I'm done, I want to pass the evenArgs to the SendOrPostCallback
  RequestStatus[] returnStatusArray = new RequestStatus[multiSoapCallResults.Length];
  multiSoapCallResults.CopyTo(returnStatusArray, 0);
  multiSoapCallResults = null;

  //This line doesn't compile of course, which is the problem
  System.Web.Services.Protocols.InvokeCompletedEventArgs eventArgs = new System.Web.Services.Protocols.InvokeCompletedEventArgs(null, false, null, returnStatusArray);

  //Need to pass event args here
  methodCallback(eventArgs);
}

Answer 1

原来这是一个愚蠢的问题。 wsdl生成已经是InvokeCompletedEventArgs的子类。我在上面的评论中建议的类已经存在于生成的代码中。我只需要找到它。

有没有办法构建System.Web.Services.Protocols.InvokeCompletedEventArgs？

1 个答案: