How to wait and get text from another form in multiple backgroundworker

问题

This is Form1

public static BackgroundWorker[] threadArray;
//public static AutoResetEvent[] _eventHandles ;
public static readonly object _lockObj = new object();
public static bool _go ;
//public static ManualResetEvent _manualResetEvent = new ManualResetEvent(false);

private void BackgroundWorkerFilesDoWork(object sender, DoWorkEventArgs e)
{
  ...
    lock (_lockObj)
    {
    //_manualResetEvent.WaitOne(30000);
    //_manualResetEvent.Reset();
    //if (clsValueStatic.CaptchaText != null)
    //{
    //    foreach (var id in clsValueStatic.CaptchaText)
    //    {
               while (!_go)
               {
                   Monitor.Wait(_lockObj);
               }
     //    }
     //}

     }
...
}

        private void btn_Start_Scraping_Click(object sender, EventArgs e)
        {
            ServicePointManager.DefaultConnectionLimit = slider_Thread.Value;
            threadArray = new BackgroundWorker[listView_Site.Items.Count];
            for (var f = 0; f < listView_Site.Items.Count; f++)
            {
                threadArray[f] = new BackgroundWorker();
                threadArray[f].DoWork += new DoWorkEventHandler(BackgroundWorkerFilesDoWork);
                threadArray[f].RunWorkerCompleted += new RunWorkerCompletedEventHandler(BackgroundWorkerFilesRunWorkerCompleted);
                threadArray[f].ProgressChanged += new ProgressChangedEventHandler(BackgroundWorkerFilesProgressChanged);
                threadArray[f].WorkerReportsProgress = true;
                threadArray[f].WorkerSupportsCancellation = true;

                threadArray[f].RunWorkerAsync(listView_Site.Items[f].Tag.ToString());


            }
        }

This is Form2

private void textBoxCaptcha_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Enter)
    {
        var textBox = sender as TextBoxX;
        if (textBox != null)
        {
            lock (frmScrapingAnalysis._lockObj)
            {
                //clsValueStatic.CaptchaText = null;
                ////frmScrapingAnalysis._go = true;
                //clsValueStatic.CaptchaText.Add(textBox.Tag.ToString(), textBox.Text.Trim());
                //textBox.Parent.Parent.Dispose();
            Monitor.Pulse(frmScrapingAnalysis._lockObj);
            }

            //frmScrapingAnalysis._manualResetEvent.Set();

            //frmScrapingAnalysis._eventHandles[frmScrapingAnalysis.positionThread].Set();
        }                
    }
}

this is program to login website

Form1 have 1 button to start multiple backgroundworker and show form2 then all backgroundworker wait to get text captcha of textbox from form2
my way want when user enter text of backgroundworker is shown on form2 then only the backgroundworker is released. All other backgroundworker still wait
I try to code and debug with AutoResetEvent/ManualResetEvent and Monitor.Wait()/Pulse() and EventWaitHandle but order execution of all backgroundworker is FIFO
3 days ago, I still have not been anyway to solve this problem :(
Or other anyway can solve my problem. Thank you so much

来源：https://stackoverflow.com/questions/26467732/how-to-wait-and-get-text-from-another-form-in-multiple-backgroundworker

标签

multithreading

winforms

httpwebrequest

backgroundworker