Public Function Contains( _
   ByVal item As VideoFormat _
) As Boolean

Dim instance As VideoFormats
Dim item As VideoFormat
Dim value As Boolean
 
value = instance.Contains(item)

public bool Contains( 
   VideoFormat item
)

public:
bool Contains( 
   VideoFormat^ item
) 

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub IndexContainsExample()
   ' reference the capture control
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

   ' reference the video formats object
   Dim videoformats As VideoFormats = capturectrl.VideoCaptureFormats

   Try
      ' select a video device, use your device name here instead of USB
      If capturectrl.VideoDevices("USB") Is Nothing Then
         Throw New Exception("No USB video device available")
      End If

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

      ' check the index of YUY2 320 x 240 video
      Dim i As Integer = videoformats.IndexOf("{32595559-0000-0010-8000-00AA00389B71}", 320, 240)

      ' access the format via the collection indexer
      Dim vf As VideoFormat = videoformats(i)

      ' check if the collection contains this format 
      ' (it should we just got it with IndexOf above)
      If videoformats.Contains(vf) Then
         ' set the result to what we expect
         _result = True
      End If
   Catch e1 As Exception
      _result = False
   End Try
End Sub

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void IndexContainsExample()
{
   // reference the capture control
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   // reference the video formats object
   VideoFormats videoformats = capturectrl.VideoCaptureFormats;

   try
   {
      // select a video device, use your device name here instead of USB
      if (capturectrl.VideoDevices["USB"] == null)
         throw new Exception("No USB video device available");

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

      // check the index of YUY2 320 x 240 video
      int i = videoformats.IndexOf("{32595559-0000-0010-8000-00AA00389B71}", 320, 240);

      // access the format via the collection indexer
      VideoFormat vf = videoformats[i];

      // check if the collection contains this format 
      // (it should we just got it with IndexOf above)
      if (videoformats.Contains(vf))
      {
         // set the result to what we expect
         _result = true;
      }
   }
   catch (Exception)
   {
      _result = false;
   }
}