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IndexOf(AudioInput) Method

Summary

Determines the index of a specific AudioInput item in the collection.

Syntax

C++

public int IndexOf( 
   AudioInput item 
)

Public Overloads Function IndexOf( _ 
   ByVal item As AudioInput _ 
) As Integer

public: 
int IndexOf(  
   AudioInput^ item 
)

Parameters

item
The AudioInput item to locate in the IList.

Return Value

The zero-based index of the found item; otherwise -1 if no item found.

Remarks

This method searches the underlying item collection to locate the desired item.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void IndexContainsExample() 
{ 
   try 
   { 
      // reference the form capture control 
      CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
      // set an audio device first.  use your audio device's name here 
      if (capturectrl.AudioDevices["USB"] == null) 
         throw new Exception("No USB audio device available"); 
 
      capturectrl.AudioDevices["USB"].Selected = true; 
 
      // reference the form capture control's audio inputs 
      AudioInputs inputs = capturectrl.AudioInputs; 
 
      // check for the master volume input 
      int i = inputs.IndexOf("Master Volume"); 
 
      // access the input via the collection indexer 
      AudioInput ai = inputs[i]; 
 
      // check whether the collection contains this input  
      // (it should we just got it with IndexOf above!) 
      if (inputs.Contains(ai)) 
      { 
         // set the result to what we expect 
         _result = true; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub IndexContainsExample() 
   Try 
      ' reference the form capture control 
      Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
      ' 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 form capture control's audio inputs 
      Dim inputs As AudioInputs = capturectrl.AudioInputs 
 
      ' check for the master volume input 
      Dim i As Integer = inputs.IndexOf("Master Volume") 
 
      ' access the input via the collection indexer 
      Dim ai As AudioInput = inputs(i) 
 
      ' check if the collection contains this input  
      ' (it should we just got it with IndexOf above!) 
      If inputs.Contains(ai) Then 
         ' set the result to what we expect 
         _result = True 
      End If 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub

Requirements

Target Platforms

Reference

AudioInputs Class

AudioInputs Members

Overload List

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Help Version 20.0.2020.4.2

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies