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IndexOf(TargetFormat) Method

Summary

Determines the index of a specific TargetFormat item in the IList.

Syntax

C++

public int IndexOf( 
   TargetFormat item 
)

Public Overloads Function IndexOf( _ 
   ByVal item As TargetFormat _ 
) As Integer

public: 
int IndexOf(  
   TargetFormat^ item 
)

Parameters

item
The TargetFormat item to locate in the IList.

Return Value

System.Int32

Remarks

This method uses the Find method of the underlying item collection to locate the desired item.

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 
   { 
      // set an audio device first, you should use your audio device name here 
      if (capturectrl.AudioDevices["USB"] == null) 
         throw new Exception("No USB audio device available"); 
 
      capturectrl.AudioDevices["USB"].Selected = true; 
 
      // reference the target formats object 
      TargetFormats formats = capturectrl.TargetFormats; 
 
      // check the index using a name string 
      int i = formats.IndexOf("WMV"); 
 
      // or get a target format directly, using a TargetFormatType enum 
      TargetFormat mp4 = formats[TargetFormatType.MP4]; 
 
      // access the format via the collection indexer 
      TargetFormat af = formats[i]; 
 
      // check if the collection contains this format  
      // (it should we just got it with IndexOf above) 
      if (formats.Contains(af) && formats.Contains(mp4)) 
      { 
         // 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 
      ' set an audio device first, you should use your audio device name here 
      If capturectrl.AudioDevices("USB") Is Nothing Then 
         Throw New Exception("No USB audio device available") 
      End If 
 
      capturectrl.AudioDevices("USB").Selected = True 
 
      ' reference the target formats object 
      Dim formats As TargetFormats = capturectrl.TargetFormats 
 
      ' check the index using a name string 
      Dim i As Integer = formats.IndexOf("WMV") 
 
      ' or get a target format directly, using a TargetFormatType enum 
      Dim mp4 As TargetFormat = formats(TargetFormatType.MP4) 
 
      ' access the format via the collection indexer 
      Dim af As TargetFormat = formats(i) 
 
      ' check if the collection contains this format  
      ' (it should we just got it with IndexOf above) 
      If formats.Contains(af) AndAlso formats.Contains(mp4) 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

TargetFormats Class

TargetFormats Members

Overload List

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Help Version 21.0.2021.7.2

Leadtools.MediaFoundation Assembly

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Leadtools.MediaFoundation Namespace

Leadtools.MediaFoundation.Common Namespace

Assemblies