public int Count { get; }
Public ReadOnly Property Count As Integer
public:
property int Count {
int get();
}
The number of items contained in the collection; or 0 if the collection is empty.
Gets the number of items contained in the collection.
using Leadtools;
using Leadtools.Multimedia;
using LeadtoolsMultimediaExamples.Fixtures;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public bool _result = false;
public void CountExample()
{
try
{
// reference the form capture control and its video formats
CaptureCtrl capturectrl = _form.CaptureCtrl;
VideoFormats formats = capturectrl.VideoCaptureFormats;
// get count before setting device
int n = formats.Count;
// set a video device first. use your video device's name here
if (capturectrl.VideoDevices["USB"] == null)
throw new Exception("No USB video device available");
capturectrl.VideoDevices["USB"].Selected = true;
// get count after setting device
int m = formats.Count;
// set out result to what we expect
_result = (m != n);
}
catch (Exception)
{
_result = false;
}
}
Imports Leadtools
Imports Leadtools.Multimedia
Imports LeadtoolsMultimediaExamples.Fixtures
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public _result As Boolean = False
Public Sub CountExample()
Try
' reference the form capture control and it's video formats
Dim capturectrl As CaptureCtrl = _form.CaptureCtrl
Dim formats As VideoFormats = capturectrl.VideoCaptureFormats
' get count before setting device
Dim n As Integer = formats.Count
' set a video device first, you should use your video device name here
If capturectrl.VideoDevices("USB") Is Nothing Then
Throw New Exception("No USB video device available")
End If
capturectrl.VideoDevices("USB").Selected = True
' get count after setting device
Dim m As Integer = formats.Count
' set out result to what we expect
_result = (m <> n)
Catch e1 As Exception
_result = False
End Try
End Sub
Help Collections
Raster .NET | C API | C++ Class Library | HTML5 JavaScript
Document .NET | C API | C++ Class Library | HTML5 JavaScript
Medical .NET | C API | C++ Class Library | HTML5 JavaScript
Medical Web Viewer .NET
Multimedia
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms
Supported Platforms
.NET, Java, Android, and iOS/macOS Assemblies
Imaging, Medical, and Document
C API/C++ Class Libraries
Imaging, Medical, and Document
HTML5 JavaScript Libraries
Imaging, Medical, and Document
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