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IndexOf(Compressor) Method

Summary

Determines the index of a specific Compressor item in the collection.

Syntax

C++

public int IndexOf(  
   Leadtools.Multimedia.Compressor item 
)

Public Overloads Function IndexOf( _ 
   ByVal item As Leadtools.Multimedia.Compressor _ 
) As Integer

public: 
int IndexOf(  
   Leadtools.Multimedia.Compressor^ item 
)

Parameters

item
The Compressor item 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 desired item.

Example

using Leadtools; 
using Leadtools.Multimedia; 
using LeadtoolsMultimediaExamples.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 compressors object 
      Compressors compressors = capturectrl.VideoCompressors; 
 
      // check the index of a video compressor 
      int i = compressors.IndexOf(capturectrl.VideoCompressors.Mpeg2); 
 
      Compressor cmp = null; 
      if (i > -1) 
         // access the compressor via the collection indexer 
         cmp = compressors[i]; 
 
      // check whether the collection contains this input  
      // (it should we just got it with IndexOf above) 
      if (compressors.Contains(cmp)) 
      { 
         // 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() 
   ' 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 compressors object 
      Dim compressors As Compressors = capturectrl.VideoCompressors 
 
      ' check the index of a video compressor 
      Dim i As Integer = compressors.IndexOf(capturectrl.VideoCompressors.Mpeg2) 
 
      Dim cmp As Compressor = Nothing 
      If i > -1 Then 
         ' access the compressor via the collection indexer 
         cmp = compressors(i) 
      End If 
 
      ' check if the collection contains this input  
      ' (it should we just got it with IndexOf above) 
      If compressors.Contains(cmp) Then 
         ' set the result to what we expect 
         _result = True 
      End If 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub