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IndexOf(string) Method

Summary

Returns the index of the first occurrence of a CaptureInput object whose name matches the given string.

Syntax

C++

public int IndexOf( 
   string name 
)

Public Overloads Function IndexOf( _ 
   ByVal name As String _ 
) As Integer

public: 
int IndexOf(  
   String^ name 
)

Parameters

name
A string value representing the name of the CaptureInput to find.

Return Value

The zero-based index position of the CaptureInput item found. It will return -1 if the CaptureInput is not found.

Remarks

Returns the index of the first occurrence of a CaptureInput object whose name matches the given string.

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 Analog 
      if (capturectrl.VideoDevices["Analog"] == null) 
         throw new Exception("No Analog video tuner device available"); 
 
      capturectrl.VideoDevices["Analog"].Selected = true; 
 
      // reference the video inputs object 
      CaptureInputs inputs = capturectrl.VideoInputs; 
 
      // check the index of a video tuner 
      int i = inputs.IndexOf("Video Tuner"); 
 
      CaptureInput ci = null; 
      if (i > -1) 
         // access the input via the collection indexer 
         ci = inputs[i]; 
 
      // check if the collection contains this input  
      // (it should we just got it with IndexOf above) 
      if (inputs.Contains(ci)) 
      { 
         // set the result to what we expect 
         _result = true; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub IndexContainsExample() 
   ' reference the capture control 
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
   Try 
      ' select a video device, use your device name here instead of Analog 
      If capturectrl.VideoDevices("Analog") Is Nothing Then 
         Throw New Exception("No Analog video tuner device available") 
      End If 
 
      capturectrl.VideoDevices("Analog").Selected = True 
 
      ' reference the video inputs object 
      Dim inputs As CaptureInputs = capturectrl.VideoInputs 
 
      ' check the index of a video tuner 
      Dim i As Integer = inputs.IndexOf("Video Tuner") 
 
      Dim ci As CaptureInput = Nothing 
      If i > -1 Then 
         ' access the input via the collection indexer 
         ci = inputs(i) 
      End If 
 
      ' check if the collection contains this input  
      ' (it should we just got it with IndexOf above) 
      If inputs.Contains(ci) Then 
         ' set the result to what we expect 
         _result = True 
      End If 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub

Requirements

Target Platforms

Reference

CaptureInputs Class

CaptureInputs Members

Overload List

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Help Version 20.0.2020.4.2

Leadtools.MediaFoundation Assembly

Introduction

Getting Started

Namespaces

Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies