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Item Property

Summary

Gets the TargetDevice item at the specified index.

Syntax

C++

public TargetDevice Item( 
   int index 
) { get; }

Public Overloads ReadOnly Property Item( _ 
   ByVal index As Integer _ 
) As TargetDevice

public: 
property TargetDevice^ Item { 
   TargetDevice^ get(int index); 
}

Parameters

index
The zero-based index of the item to get.

Property Value

The TargetDevice item at the specified index.

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.

Remarks

This property provides the ability to access 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.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public ConvertCtrlForm _form = new ConvertCtrlForm(); 
 
public void IndexContainsExample() 
{ 
   // reference the capture control 
   ConvertCtrl convertctrl = _form.ConvertCtrl; 
 
   // input file 
   string inFile = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi"); 
 
   try 
   { 
      // set the input file 
      convertctrl.SourceFile = inFile; 
 
      // reference the video target devices object 
      TargetDevices devices = convertctrl.TargetDevices; 
 
      // check the index of an HD Audio device 
      int i = devices.IndexOf("HD Audio"); 
 
      TargetDevice dev = null; 
      if (i > -1) 
         // access the input via the collection indexer 
         dev = devices[i]; 
 
      // check whether the collection contains this input  
      // (it should we just got it with IndexOf above) 
      if (devices.Contains(dev)) 
      { 
         // set the result to what we expect 
         _result = true; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string MediaDir = @"C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media"; 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As ConvertCtrlForm = New ConvertCtrlForm() 
 
Public Sub IndexContainsExample() 
   ' reference the capture control 
   Dim convertctrl As ConvertCtrl = _form.ConvertCtrl 
 
   ' input file 
   Dim inFile As String = Path.Combine(LEAD_VARS.MediaDir, "ConvertCtrl_Source.avi") 
 
   Try 
      ' set the input file 
      convertctrl.SourceFile = inFile 
 
      ' reference the video target devices object 
      Dim devices As TargetDevices = convertctrl.TargetDevices 
 
      ' check the index of an HD Audio device 
      Dim i As Integer = devices.IndexOf("HD Audio") 
 
      Dim dev As TargetDevice = Nothing 
      If i > -1 Then 
         ' access the input via the collection indexer 
         dev = devices(i) 
      End If 
 
      ' check if the collection contains this input  
      ' (it should we just got it with IndexOf above) 
      If devices.Contains(dev) Then 
         ' set the result to what we expect 
         _result = True 
      End If 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const MediaDir As String = "C:\Program Files (x86)\LEAD Technologies\LEADTOOLS 20\Media" 
End Class

Requirements

Target Platforms

Reference

TargetDevices Class

TargetDevices 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