public int Count { get; }
Public ReadOnly Property Count As Integer
public:
property int Count {
int get();
}
The number of items contained in the collection.
using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public bool _result = false;
public void CountExample()
{
try
{
// reference the form capture control
CaptureCtrl capturectrl = _form.CaptureCtrl;
// reference the target formats
TargetFormats formats = capturectrl.TargetFormats;
// reference the target format object
TargetFormat tf = formats[TargetFormatType.MP4];
// reference the target video formats object
TargetVideoFormats tvformats = tf.VideoFormats;
// get count before setting device
int n = tvformats.Count;
// set an video device first, you should use your video device name here
if (capturectrl.VideoDevices["USB"] == null)
throw new Exception("No USB video device available");
capturectrl.VideoDevices["USB"].Selected = true;
// set out result to what we expect
_result = (n > 0);
}
catch (Exception)
{
_result = false;
}
}
Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public _result As Boolean = False
Public Sub CountExample()
Try
' reference the form capture control
Dim capturectrl As CaptureCtrl = _form.CaptureCtrl
' reference the target formats
Dim formats As TargetFormats = capturectrl.TargetFormats
' reference the target format object
Dim tf As TargetFormat = formats(TargetFormatType.MP4)
' reference the target video formats object
Dim tvformats As TargetVideoFormats = tf.VideoFormats
' get count before setting device
Dim n As Integer = tvformats.Count
' set an 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
' set out result to what we expect
_result = (n > 0)
Catch e1 As Exception
_result = False
End Try
End Sub
Help Collections
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Imaging, Medical, and Document
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