Leadtools.MediaFoundation Namespace > TargetAudioFormats Class : Count Property |
'Declaration Public ReadOnly Property Count As Integer
'Usage Dim instance As TargetAudioFormats Dim value As Integer value = instance.Count
public int Count {get;}
Imports Leadtools Imports Leadtools.MediaFoundation Imports LeadtoolsMediaFoundationExamples.Fixtures Public _form As CaptureCtrlForm = New CaptureCtrlForm() Public _result As Boolean = False Public Sub CountResetExample() 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 audio formats object Dim taformats As TargetAudioFormats = tf.AudioFormats ' get count before setting device Dim n As Integer = taformats.Count ' set an audio device first, you should use your audio device name here If capturectrl.AudioDevices("USB") Is Nothing Then Throw New Exception("No USB audio device available") End If capturectrl.AudioDevices("USB").Selected = True ' reset the collection taformats.Reset() ' set out result to what we expect _result = (n > 0) Catch e1 As Exception _result = False End Try End Sub
using Leadtools; using Leadtools.MediaFoundation; using LeadtoolsMediaFoundationExamples.Fixtures; public CaptureCtrlForm _form = new CaptureCtrlForm(); public bool _result = false; public void CountResetExample() { 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 audio formats object TargetAudioFormats taformats = tf.AudioFormats; // get count before setting device int n = taformats.Count; // set an audio device first, you should use your audio device name here if (capturectrl.AudioDevices["USB"] == null) throw new Exception("No USB audio device available"); capturectrl.AudioDevices["USB"].Selected = true; // reset the collection taformats.Reset(); // set out result to what we expect _result = (n > 0); } catch (Exception) { _result = false; } }