public TargetAudioFormat Item(
string name
) { get; set; }
public:
property TargetAudioFormat^ Item {
TargetAudioFormat^ get(String^ name);
void set (String^ name, TargetAudioFormat^ );
}
name
The string name of the item to get or set.
The TargetAudioFormat item with the specified name.
Exceptions
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. |
This property allows access to a specific item in the collection by using the following syntax: myCollection [index]. The C# language uses the this keyword to define the indexers instead of implementing the Item property. VB implements Item as a default property, which provides the same indexing functionality. An application can use this method to find a specific target audio format. If the method fails, an error is raised. For more information, refer to the Error Codes.
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;
}
}
Help Collections
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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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