Public Sub CopyTo( _
   ByVal array() As AudioFormat, _
   ByVal arrayIndex As Integer _
) 

Dim instance As AudioFormats
Dim array() As AudioFormat
Dim arrayIndex As Integer
 
instance.CopyTo(array, arrayIndex)

public void CopyTo( 
   AudioFormat[] array,
   int arrayIndex
)

public:
void CopyTo( 
   array<AudioFormat^>^ array,
   int arrayIndex
) 

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub CopyToExample()
   ' reference the capture control and it's audio formats
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

   Try
      ' set an audio device first, you should use your audio device name here
      If capturectrl.AudioDevices("USB") Is Nothing Then
         Throw New Exception("No USB audio device available")
      End If

      capturectrl.AudioDevices("USB").Selected = True

      ' reference the audio formats collection
      Dim audioformats As AudioFormats = capturectrl.AudioCaptureFormats

      ' allocate a new array for the copied audio formats
      Dim copiedFormats As AudioFormat() = New AudioFormat(audioformats.Count - 1) {}

      ' copy them
      audioformats.CopyTo(copiedFormats, 0)

      ' set the result to what we expect
      _result = (copiedFormats.Length = audioformats.Count)
   Catch e1 As Exception
      _result = False
   End Try
End Sub

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void CopyToExample()
{
   // reference the capture control and it's audio formats
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   try
   {
      // set an audio device first, you should use your audio device name here
      if (capturectrl.AudioDevices["USB"] == null)
         throw new Exception("No USB audio device available");

      capturectrl.AudioDevices["USB"].Selected = true;

      // reference the audio formats collection
      AudioFormats audioformats = capturectrl.AudioCaptureFormats;

      // allocate a new array for the copied audio formats
      AudioFormat[] copiedFormats = new AudioFormat[audioformats.Count];

      // copy them
      audioformats.CopyTo(copiedFormats, 0);

      // set the result to what we expect
      _result = (copiedFormats.Length == audioformats.Count);
   }            
   catch (Exception)
   {
      _result = false;
   }
}