Question

i build an application how take Pcap file (wireshark file) and play the packets, the play operation is with exe file who get file path and interface int.

private void btnStart_Click(object sender, EventArgs e)
{
    shouldContinue = true;
    btnStart.Enabled = false;
    btnStop.Enabled = true;
    groupBoxAdapter.Enabled = false;
    groupBoxRootDirectory.Enabled = false;
    string filePath = string.Empty;

    ThreadPool.QueueUserWorkItem(delegate
    {
        for (int i = 0; i < lvFiles.Items.Count && shouldContinue; i++)
        {
            this.Invoke((MethodInvoker)delegate { filePath = lvFiles.Items[i].Tag.ToString(); });
            pcapFile = new PcapFile();
            pcapFile.sendQueue(filePath, adapter);
        }

        this.Invoke((MethodInvoker)delegate
        {
            btnStart.Enabled = true;
            btnStop.Enabled = false;
            groupBoxAdapter.Enabled = true;
            groupBoxRootDirectory.Enabled = true;
        });
    });
}

the sendQueue code:

public void sendQueue(string filePath, int deviceNumber)
        {
            ProcessStartInfo processStartInfo = new ProcessStartInfo(@"D:\Downloads\SendQueue\sendQueue.exe");
            processStartInfo.Arguments = string.Format("{0} {2}{1}{2}", (deviceNumber).ToString(), filePath, "\"");
            processStartInfo.WindowStyle = ProcessWindowStyle.Hidden;
            processStartInfo.RedirectStandardOutput = true;
            processStartInfo.RedirectStandardError = true;
            processStartInfo.CreateNoWindow = true;
            processStartInfo.UseShellExecute = false;
            processStartInfo.ErrorDialog = false;

            using (Process process = Process.Start(processStartInfo))
            {
                process.WaitForExit();
            }
        }

Answer 1

Doen’t look that you need Background worker.

     List<string> tags = new List<string>();
     foreach (object item in lvFiles.Items)
     {
        tags.Add(item.tag.ToString());
     }

     ThreadPool.QueueUserWorkItem(delegate
     {
       for (int i = 0; i < tags.Count && shouldContinue; i++)
       {
           sendQueue(tags[i], adapter);
       }

        //...
     }