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Contains Method
See Also 
Leadtools.Multimedia Namespace > AudioInputs Class : Contains Method



item
The object to locate in the collection.
item
The object to locate in the collection.
Determines whether a collection contains a specified AudioInput item.

Syntax

Visual Basic (Declaration) 
Public Function Contains( _
   ByVal item As AudioInput _
) As Boolean
Visual Basic (Usage)Copy Code
Dim instance As AudioInputs
Dim item As AudioInput
Dim value As Boolean
 
value = instance.Contains(item)
C# 
public bool Contains( 
   AudioInput item
)
C++/CLI 
public:
bool Contains( 
   AudioInput^ item
) 

Parameters

item
The object to locate in the collection.

Return Value

true if the item was found in the collection; false, otherwise.

Example

Visual BasicCopy Code
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
C#Copy Code
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, 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 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 if 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;
   }
}

Remarks

Determines whether the collection contains the specified AudioInput item.

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also