IndexOf(VideoFormat) Method

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public int IndexOf( 
   VideoFormat item
)

'Declaration
 
Public Overloads Function IndexOf( _
   ByVal item As VideoFormat _
) As Integer

'Usage
 
Dim instance As VideoFormats
Dim item As VideoFormat
Dim value As Integer
 
value = instance.IndexOf(item)

public int IndexOf( 
   VideoFormat item
)

 function Leadtools.Multimedia.VideoFormats.IndexOf(VideoFormat)( 
   item 
)

public:
int IndexOf( 
   VideoFormat^ item
)

Parameters

item: A VideoFormat object reference of the item to find.

Return Value

int The zero-based index position of the VideoFormat item found; otherwise -1 if no item found.

Returns the index of the first occurrence of a VideoFormat object.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

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 whether 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;
   }
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

VideoFormats Class
VideoFormats Members
Overload List