In This Topic ▼

IndexOf(string) Method

Summary

Determines the index of a specific CaptureSubType name in the collection.

Syntax

C++

public int IndexOf( 
   string name 
)

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

public: 
int IndexOf(  
   String^ name 
)

Parameters

name
The CaptureSubType name to locate in the collection.

Return Value

The zero-based index of the found item; otherwise -1 if no item found.

Remarks

This method searches the underlying item collection to locate the item name specified.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.Fixtures; 
 
public bool _result = false; 
public CaptureCtrlForm _form = new CaptureCtrlForm(); 
 
public void IndexContainsExample() 
{ 
   try 
   { 
      // reference the form capture control 
      CaptureCtrl capturectrl = _form.CaptureCtrl; 
 
      // set a video device first.  use your video device's name here 
      if (capturectrl.VideoDevices["Analog"] == null) 
         throw new Exception("No Analog video device available"); 
 
      capturectrl.VideoDevices["Analog"].Selected = true; 
 
      // reference the video capture subtypes collection 
      CaptureSubTypes stypes = capturectrl.VideoCaptureSubTypes; 
 
      // check for RGB24 subtype 
      int i = stypes.IndexOf(Constants.MEDIASUBTYPE_YUY2); 
 
      // access the input via the collection indexer 
      CaptureSubType cs = stypes[i]; 
 
      // check whether the collection contains this subtype  
      // (it should since we just got it with IndexOf above!) 
      if (stypes.Contains(cs)) 
      { 
         // set the result to what we expect 
         _result = true; 
      } 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
}

Imports Leadtools 
Imports Leadtools.Multimedia 
Imports LeadtoolsMultimediaExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As CaptureCtrlForm = New CaptureCtrlForm() 
 
Public Sub IndexContainsExample() 
   Try 
      ' reference the form capture control 
      Dim capturectrl As CaptureCtrl = _form.CaptureCtrl 
 
      ' set a video device first, you should use your video device name here 
      If capturectrl.VideoDevices("Analog") Is Nothing Then 
         Throw New Exception("No Analog video device available") 
      End If 
 
      capturectrl.VideoDevices("Analog").Selected = True 
 
      ' reference the video capture subtypes collection 
      Dim stypes As CaptureSubTypes = capturectrl.VideoCaptureSubTypes 
 
      ' check for RGB24 subtype 
      Dim i As Integer = stypes.IndexOf(Leadtools.Multimedia.Constants.MEDIASUBTYPE_YUY2) 
 
      ' access the input via the collection indexer 
      Dim cs As CaptureSubType = stypes(i) 
 
      ' check if the collection contains this subtype  
      ' (it should we just got it with IndexOf above!) 
      If stypes.Contains(cs) 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

CaptureSubTypes Class

CaptureSubTypes Members

Overload List

Download our FREE evaluation

Help Version 21.0.2021.7.2

Leadtools.Multimedia Assembly

Introduction

Getting Started

Namespaces

Leadtools.Multimedia Namespace

Leadtools.Multimedia.Common Namespace

Assemblies