Question

private void showStatistics(string path)
{
    Thread thread = new Thread(() =>
        {
            Statistics myClass= new Statistics(path);
            list = myClass.getStatistics();
        });

    thread.Start();

    foreach (KeyValuePair<string, string> item in list )
    {
        listBoxIps.Items.Add(item.Key + item.Value + "\n");
    }
}

I want to wait until thread has finish its job and then start the foreach, when I put the foreach in the thread, cross threading error received.

Answer 1

You want thread.Join. But that’s probably not exactly what you are trying to do (because Join will block, in which case why even use a separate thread in the first place). Look into the BackgroundWorker class.