Leadtools.MediaFoundation Namespace > TargetAudioFormats Class > Item Property : Item(String) Property |
'Declaration Public Overloads Property Item( _ ByVal name As String _ ) As TargetAudioFormat
'Usage Dim instance As TargetAudioFormats Dim name As String Dim value As TargetAudioFormat instance.Item(name) = value value = instance.Item(name)
public TargetAudioFormat Item( string name ) {get; set;}
public: property TargetAudioFormat^ Item { TargetAudioFormat^ get(String^ name); void set (String^ name, TargetAudioFormat^ value); }
Exception | Description |
---|---|
System.ArgumentOutOfRangeException | The exception that is thrown when the value of an argument is outside the allowable range of values as defined by the invoked method. |
System.NullReferenceException | The exception that is thrown when there is an attempt to dereference a null object reference. |
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 Try ' 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 ' reference the target formats object 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 ' check the index using a name string Dim i As Integer = taformats.IndexOf("{00001610-0000-0010-8000-00AA00389B71}") ' AAC ' set current selection taformats.Selection = i ' access the format via the collection indexer Dim taformat As TargetAudioFormat = taformats(i) ' check if the collection contains this format ' (it should we just got it with IndexOf above) If taformats.Contains(taformat) Then ' set the result to what we expect _result = True End If Catch e1 As Exception _result = False End Try End Sub
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; try { // 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; // reference the target formats object TargetFormats formats = capturectrl.TargetFormats; // reference the target format object TargetFormat tf = formats[TargetFormatType.MP4]; // reference the target audio formats object TargetAudioFormats taformats = tf.AudioFormats; // check the index using a name string int i = taformats.IndexOf("{00001610-0000-0010-8000-00AA00389B71}");// AAC // set current selection taformats.Selection = i; // access the format via the collection indexer TargetAudioFormat taformat = taformats[i]; // check if the collection contains this format // (it should we just got it with IndexOf above) if (taformats.Contains(taformat)) { // set the result to what we expect _result = true; } } catch (Exception) { _result = false; } }