SampleApp.MainForm.timer_Tick C# (CSharp) Method

        private void timer_Tick(object sender, EventArgs e)
        {
            IVideoSource videoSource1 = videoSourcePlayer1.VideoSource;
            IVideoSource videoSource2 = videoSourcePlayer2.VideoSource;

            int framesReceived1 = 0;
            int framesReceived2 = 0;

            // get number of frames for the last second
            if (videoSource1 != null)
            {
                framesReceived1 = videoSource1.FramesReceived;
            }

            if (videoSource2 != null)
            {
                framesReceived2 = videoSource2.FramesReceived;
            }

            if (stopWatch == null)
            {
                stopWatch = new Stopwatch();
                stopWatch.Start();
            }
            else
            {
                stopWatch.Stop();

                float fps1 = 1000.0f * framesReceived1 / stopWatch.ElapsedMilliseconds;
                float fps2 = 1000.0f * framesReceived2 / stopWatch.ElapsedMilliseconds;

                camera1FpsLabel.Text = fps1.ToString("F2") + " fps";
                camera2FpsLabel.Text = fps2.ToString("F2") + " fps";

                stopWatch.Reset();
                stopWatch.Start();
            }
        }
    }