Item Property

Summary
Gets or sets the TargetAudioFormat item with the specified name.
Syntax
C#
C++/CLI
public TargetAudioFormat Item( 
   string name 
) { get; set; } 
public: 
property TargetAudioFormat^ Item { 
   TargetAudioFormat^ get(String^ name); 
   void set (String^ name, TargetAudioFormat^ ); 
} 

Parameters

name
The string name of the item to get or set.

Property Value

The TargetAudioFormat item with the specified name.

Exceptions

ExceptionDescription
System.ArgumentOutOfRangeExceptionThe exception that is thrown when the value of an argument is outside the allowable range of values as defined by the invoked method.
System.NullReferenceExceptionThe exception that is thrown when there is an attempt to dereference a null object reference.
Remarks

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.

Example
C#
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; 
   } 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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Leadtools.MediaFoundation Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.