ช่วยด้วยค่ะ C# กับ Thread ค่ะ พอเค้าคลิกตรงปุ่ม button2_Click_1 แล้ว label1 จะวิ่งเปนตัวเลขเรื่อยๆ

  private void button1_Click(object sender, EventArgs e)
        {
            Thread workThread = new Thread(new ThreadStart(Counting));
            workThread.IsBackground = true;
            workThread.Start();
        }
        delegate void StringParameterDelegate(int count);
        delegate void StringParameterDelegate2(int count);
        private void Counting()
        {
            for (int i = 0; i < 10000000; i++)
            {
                UpdateLabelCount(i);
                Thread.Sleep(100);
            }
        }       
        private void UpdateLabelCount(int count)
        {
            if (InvokeRequired)
            {
                // We're not in the UI thread, so we need to call BeginInvoke
                BeginInvoke(new StringParameterDelegate(UpdateLabelCount), new object[] { count });
                return;
            }
            label1.Text = count.ToString();
        }
        private void Counting2()
        {
            for (int i = 0; i < 10000000; i++)
            {
                UpdateLabelCount2(i);
                Thread.Sleep(100);
            }
        }
        private void UpdateLabelCount2(int count)
        {
            if (InvokeRequired)
            {
                // We're not in the UI thread, so we need to call BeginInvoke
                BeginInvoke(new StringParameterDelegate2(UpdateLabelCount2), new object[] { count });
                return;
            }
            label2.Text = count.ToString();
        }
        private void button2_Click(object sender, EventArgs e)
        {
            Thread workThread = new Thread(new ThreadStart(Counting2));
            workThread.IsBackground = true;
            workThread.Start();
        }   
    }