Select video and audio capture devices in Video Capture SDK .Net

foreach (var device in VideoCapture1.Video_CaptureDevices)
{
    cbVideoInputDevice.Items.Add(device.Name);                
}

VideoCapture1.Video_CaptureDevice = new VideoCaptureSource(cbVideoInputDevice.Text);

var deviceItem = VideoCapture1.Video_CaptureDevices.First(device => device.Name == cbVideoInputDevice.Text);
if (deviceItem == null)
{
    return;
}

cbVideoInputFormat.Items.Clear();
foreach (string format in deviceItem.VideoFormats)
{
    cbVideoInputFormat.Items.Add(format);
}

cbFramerate.Items.Clear(); 
foreach (string frameRate in deviceItem.VideoFrameRates) 
{ 
    cbVideoFrameRate.Items.Add(frameRate); 
}

VideoCapture1.Video_CaptureDevice.Format = cbVideoInputFormat.Text;

VideoCapture1.Video_CaptureDevice.Format_UseBest = true;

VideoCapture1.Video_CaptureDevice.FrameRate = Convert.ToDouble(cbVideoFrameRate.Text);

foreach (var device in VideoCapture1.Audio_CaptureDevices)
{
    cbAudioInputDevice.Items.Add(device.Name);                
}

VideoCapture1.Audio_CaptureDevice = new AudioCaptureSource(cbAudioInputDevice.Text);

var deviceItem = VideoCapture1.Audio_CaptureDevices.FirstOrDefault(device => device.Name == cbAudioInputDevice.Text);

if (deviceItem != null)
{
  foreach (string format in deviceItem.Formats)
  {
    cbAudioInputFormat.Items.Add(format);
  }
}

VideoCapture1.Audio_CaptureDevice.Format = cbAudioInputFormat.Text;

VideoCapture1.Audio_CaptureDevice.Format_UseBest = true;

VideoCapture1.Audio_CaptureDevice.Line = cbAudioInputLine.Text;