上不支持异常WaitHandle.WaitAll文件

你在其中一种方法上做了记号吗 [STAThread]

我建议不要使用多个 WaitHandle CountdownEvent 而不是上课。它产生了更优雅和可伸缩的代码。另外,还有 WaitHandle.WaitAll

public static void SpawnThreads(List<string> imageList)
{ 
  imageList = new List<string>(imageList); 
  var finished = new CountdownEvent(1);
  var picDownloaders = new PicDownloader[imageList.Count]; 
  ThreadPool.SetMaxThreads(MaxThreadCount, MaxThreadCount); 
  for (int i = 0; i < imageList.Count; i++) 
  { 
    finished.AddCount();    
    PicDownloader p = new PicDownloader(imageList[i]); 
    picDownloaders[i] = p; 
    ThreadPool.QueueUserWorkItem(
      (state) =>
      {
        try
        {
          p.DoAction
        }
        finally
        {
          finished.Signal();
        }
      });
  } 
  finished.Signal();
  finished.Wait();
  Console.WriteLine("All pics downloaded"); 
} 

你试过为线程设置公寓状态吗?

thread.SetApartmentState (System.Threading.Apartmentstate.MTA );