C# WinApp สอบถามเรื่อง การใช้ System.Threading.Thread กับ textBox ที่ Bind กับ BindingSource ครับ

private void button2_Click(object sender, EventArgs e)
        {
           // new System.Threading.Thread(Display).Start();
            backgroundWorker1.RunWorkerAsync();
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            zipCodeTTableAdapter.FillBy(this.database2DataSet.ZipCodeT, textBox1.Text);

        }

        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {

        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            MessageBox.Show(zipCodeTBindingSource.Count.ToString());
            if (e.Error != null) throw e.Error;
        }

private void button2_Click(object sender, EventArgs e)
        {
            //new System.Threading.Thread(Display).Start();
            backgroundWorker1.RunWorkerAsync();
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            zipCodeTTableAdapter.FillBy(this.database2DataSet.ZipCodeT, textBox1.Text);

        }
        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            zipCodeTBindingSource.ResetBindings(false);
            if (e.Error != null) throw e.Error;
        }

button.Click += (_, __) =>
{
    // Create another thread that does something with the data object
    var worker = new BackgroundWorker();

    worker.DoWork += (___, _____) =>
    {
        for (int i = 0; i < 10; i++)
        {
            // This doesn't lead to any cross-thread exception
            // anymore, cause the binding source was told to
            // be quiet. When we're finished and back in the
            // gui thread tell her to fire again its events.
            myData.MyText = "Try " + i;
        }
    };

    worker.RunWorkerCompleted += (___, ____) =>
    {
        // Back in gui thread let the binding source
        // update the gui elements.
        bindingSource.ResumeBinding();
        button.Enabled = true;
    };

    // Stop the binding source from propagating
    // any events to the gui thread.
    bindingSource.SuspendBinding();
    button.Enabled = false;
    worker.RunWorkerAsync();
};