Determines whether a collection contains a specified VideoFormat item.
public bool Contains(
VideoFormat item
)
Public Function Contains( _
ByVal item As VideoFormat _
) As Boolean
public:
bool Contains(
VideoFormat^ item
)
item
The object to locate in the collection.
true if the item was found in the collection; otherwise, it is false
Determines whether the collection contains the specified VideoFormat item.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
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;
}
}
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures
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
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