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Item Property

Summary

Gets the TargetDevice item with the specified name.

Syntax

C++/CLI

public TargetDevice Item( 
   string name 
) { get; }

public: 
property TargetDevice^ Item { 
   TargetDevice^ get(String^ name); 
}

Parameters

name
The string representing the name of the item being obtained.

Property Value

The TargetDevice 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.

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. Target Device names are unique. An application can use this method to find a specific device. A Target Device name can be retrieved by calling the TargetDevice.Name property or by using the LTMM DirectShow Filter List Utility. If the method fails, an error is raised. For more information, refer to the Error Codes.

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:\LEADTOOLS23\Media"; 
}

Requirements

Target Platforms

Reference

TargetDevices Class

TargetDevices Members

Overload List

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Help Version 23.0.2024.2.29

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies