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IndexOf(string) Method

Summary

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

Syntax

C#
VB
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 Processor to find.

Return Value

The zero-based index position of the Processor item found, or -1 if not found.

Remarks

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

Example

C#
VB
using Leadtools; 
using Leadtools.MediaFoundation; 
using LeadtoolsMediaFoundationExamples.Fixtures; 
 
public bool _result = false; 
public PlayCtrlForm _form = new PlayCtrlForm(); 
 
public void IndexOfExample() 
{ 
   // reference the play control 
   PlayCtrl playctrl = _form.PlayCtrl; 
 
   try 
   { 
      // get the play controls available audio processors 
      AudioProcessors allProcs = playctrl.AudioProcessors; 
 
      // get the play controls selected audio processors 
      AudioProcessors selProcs = playctrl.SelectedAudioProcessors; 
 
      // get index of LEAD MF Volume Transform 
      int nIndex = allProcs.IndexOf("{E2B7DC41-38C5-11D5-91F6-00104BDB8FF9}"); 
 
      // get LEAD MF Volume Transform 
      Processor AudProc = allProcs[nIndex]; 
 
      // add the LEAD MF Volume Transform to the selected audio processors 
      selProcs.Add(AudProc); 
 
      // get the index of added audio processor 
      int i = selProcs.IndexOf(AudProc); 
 
      // set the result to what we expect 
      _result = (selProcs[i] == AudProc); 
   } 
   catch (Exception) 
   { 
      _result = false; 
   } 
} 
Imports Leadtools 
Imports Leadtools.MediaFoundation 
Imports LeadtoolsMediaFoundationExamples.Fixtures 
 
Public _result As Boolean = False 
Public _form As PlayCtrlForm = New PlayCtrlForm() 
 
Public Sub IndexOfExample() 
   ' reference the play control 
   Dim playctrl As PlayCtrl = _form.PlayCtrl 
 
   Try 
      ' get the play controls available audio processors 
      Dim allProcs As AudioProcessors = playctrl.AudioProcessors 
 
      ' get the play controls selected audio processors 
      Dim selProcs As AudioProcessors = playctrl.SelectedAudioProcessors 
 
      ' get index of LEAD MF Volume Transform 
      Dim nIndex As Integer = allProcs.IndexOf("{E2B7DC41-38C5-11D5-91F6-00104BDB8FF9}") 
 
      ' get LEAD MF Volume Transform 
      Dim AudProc As Processor = allProcs(nIndex) 
 
      ' add the LEAD MF Volume Transform to the selected audio processors 
      selProcs.Add(allProcs(nIndex)) 
 
      ' get the index of added audio processor 
      Dim i As Integer = selProcs.IndexOf(allProcs(nIndex)) 
 
      ' set the result to what we expect 
      _result = (selProcs(i) Is AudProc) 
   Catch e1 As Exception 
      _result = False 
   End Try 
End Sub 

Requirements

Target Platforms

Help Version 19.0.2017.10.19
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Leadtools.MediaFoundation Assembly