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Contains Method (Devices)

Summary

Queries the collection of Devices to check whether the given Device exists. If true, the device exists in the current collection. Otherwise, is false.

Syntax

C++

public bool Contains( 
   Device item 
)

Public Function Contains( _ 
   ByVal item As Device _ 
) As Boolean

public: 
bool Contains(  
   Device^ item 
)

Parameters

item
A Device to search for in the current collection.

Return Value

If true, the device exists in the current collection. Otherwise, is false.

Example

using Leadtools; 
using Leadtools.MediaStreaming; 
 
 
public Server _server = null; 
public bool _result = false; 
 
public void IndexContainsExample() 
{ 
   try 
   { 
      // create an instance of the server object 
      _server = new Leadtools.MediaStreaming.Server(); 
 
      // retrieve a copy of the Live Streams 
      LiveStreams Streams = _server.GetLiveStreams(); 
 
      // create live stream just to demonstrate using Devices  IndexOf and Contains 
      LiveStream stream = Streams.CreateLiveStream(); 
 
      //Get the Video Devices  
      Devices Devices = stream.VideoDevices; 
 
      // get the Device object of the name "@device:sw:{083863F1-70DE-11D0-BD40-00A0C911CE86}\\{E2B7DE48-38C5-11D5-91F6-00104BDB8FF9}" 
      // this is equal to: 
      // Device dev = Devices["@device:sw:{083863F1-70DE-11D0-BD40-00A0C911CE86}\\{E2B7DE48-38C5-11D5-91F6-00104BDB8FF9}"]; 
      int nIndex = Devices.IndexOf("@device:sw:{083863F1-70DE-11D0-BD40-00A0C911CE86}\\{E2B7DE48-38C5-11D5-91F6-00104BDB8FF9}"); 
      Device dev = null; 
 
      if (nIndex > -1) 
         // access the Device via the collection indexer 
         dev = Devices[nIndex]; 
 
      // check whether the collection contains this item 
      // (it should we just got it with IndexOf above) 
      if (Devices.Contains(dev)) 
      { 
         // set the result to what we expect 
         _result = true; 
      } 
      else 
      { 
         _result = false; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Imports Leadtools 
Imports Leadtools.MediaStreaming 
 
 
Public _server As Server = Nothing 
Public _result As Boolean = False 
 
Public Sub IndexContainsExample() 
   Try 
      ' create an instance of the server object 
      _server = New Leadtools.MediaStreaming.Server() 
 
      ' retrieve a copy of the Live Streams 
      Dim Streams As LiveStreams = _server.GetLiveStreams() 
 
      ' create live stream just to demonstrate using Devices  IndexOf and Contains 
      Dim stream As LiveStream = Streams.CreateLiveStream() 
 
      'Get the Video Devices  
      Dim Devices As Devices = stream.VideoDevices 
 
      ' get the Device object of the name "@device:sw:{083863F1-70DE-11D0-BD40-00A0C911CE86}\\{E2B7DE48-38C5-11D5-91F6-00104BDB8FF9}" 
      ' this is equal to: 
      ' Device dev = Devices["@device:sw:{083863F1-70DE-11D0-BD40-00A0C911CE86}\\{E2B7DE48-38C5-11D5-91F6-00104BDB8FF9}"]; 
      Dim nIndex As Integer = Devices.IndexOf("@device:sw:{083863F1-70DE-11D0-BD40-00A0C911CE86}\{E2B7DE48-38C5-11D5-91F6-00104BDB8FF9}") 
      Dim dev As Device = Nothing 
 
      If nIndex > -1 Then 
         ' access the Device via the collection indexer 
         dev = Devices(nIndex) 
      End If 
 
      ' check whether the collection contains this item 
      ' (it should we just got it with IndexOf above) 
      If Devices.Contains(dev) Then 
         ' set the result to what we expect 
         _result = True 
      Else 
         _result = False 
      End If 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub

Requirements

Target Platforms

Reference

Devices Class

Devices Members

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Help Version 21.0.2021.6.30

Leadtools.MediaStreaming Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaStreaming Namespace

Assemblies