I'm trying to update two progress bars simultaneosly. I created two threads, launched them to update the bars by checking if InvokeRequred amd calling Control,BeginInvoke if necessary.

I've seen in the debugger that its hitting BeginInvoke, but the bars still seem to be updating one after the other. I've tried putting a sleep to slow things down.

Is there a better way to set this up?

Thread newThread1 = new Thread(
            new ThreadStart(this.Meter1));
            
            Thread newThread2 = new Thread(
            new ThreadStart(this.Meter2));

            newThread1.Start();
            newThread2.Start();

 private void  Meter1()
        {

            if (pbMeter1.InvokeRequired)
            {
                IAsyncResult result = pbMeter1.BeginInvoke(new MethodInvoker(this.Meter1));
                while (!result .IsCompleted )
                {
                    Thread.Sleep(100);
                }
                pbMeter1.EndInvoke(result);

            }
            else
            {
                for (int i = 0; i < 10000; i++)
                {

                    pbMeter1.Value = i;
                }
            }
             
        }

        private void Meter2()
        {
            if (pbMeter2.InvokeRequired)
            {
               IAsyncResult result = pbMeter2.BeginInvoke(new MethodInvoker(this.Meter2));

                while (!result.IsCompleted)
                {
                    Thread.Sleep(100);
                }
                pbMeter2.EndInvoke(result);

            }
            else
            {
                for (int i = 0; i < 10000; i++)
                {
                    pbMeter2.Value = i;
                }
            }
        }