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Contains Method

Summary

Determines whether a collection contains a specified Device item.

Syntax

C++/CLI

public bool Contains( 
   Device item 
)

public: 
bool Contains(  
   Device^ item 
)

Parameters

item
The object to locate in the collection.

Return Value

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

Example

using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void IndexContainsExample() 
{ 
   // reference the capture control 
   CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
   try 
   { 
      // select a video device, use your device name here instead of USB 
      if (capturectrl.VideoDevices["USB"] == null) 
         throw new Exception("No USB video device available"); 
 
      capturectrl.VideoDevices["USB"].Selected = true; 
 
      // reference the video devices object 
      Devices devices = capturectrl.VideoDevices; 
 
      // check the index of a USB video device 
      int i = devices.IndexOf("USB"); 
 
      Device dev = null; 
      if (i > -1) 
         // access the input via the collection indexer 
         dev = devices[i]; 
      // check if the collection contains this input  
      // (it should we just got it with IndexOf above) 
      if (devices.Contains(dev) && devices.Selection == i) 
      { 
         // set the result to what we expect 
         _result = true; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Requirements

Target Platforms

Reference

Devices Class

Devices Members

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Help Version 23.0.2024.2.29

Leadtools.MediaFoundation Assembly

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Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

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