IndexOf(String,Int32,Int32) Method

Visual Basic
C#
C++/CLI

'Declaration
 
Public Overloads Function IndexOf( _
   ByVal SubTypeName As String, _
   ByVal Width As Integer, _
   ByVal Height As Integer _
) As Integer

'Usage
 
Dim instance As VideoFormats
Dim SubTypeName As String
Dim Width As Integer
Dim Height As Integer
Dim value As Integer
 
value = instance.IndexOf(SubTypeName, Width, Height)

public int IndexOf( 
   string SubTypeName,
   int Width,
   int Height
)

public:
int IndexOf( 
   String^ SubTypeName,
   int Width,
   int Height
)

Parameters

SubTypeName: A integer value representing the subtype name of the VideoFormat to find.
Width: A integer value representing the width of the VideoFormat to find.
Height: A integer value representing the height of the VideoFormat to find.

Return Value

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

Returns the index of the first occurrence of a VideoFormat object whose properties match the given parameters.

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

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

   ' reference the video formats object
   Dim videoformats As VideoFormats = capturectrl.VideoCaptureFormats

   Try
      ' select a video device, use your device name here instead of USB
      If capturectrl.VideoDevices("USB") Is Nothing Then
         Throw New Exception("No USB video device available")
      End If

      capturectrl.VideoDevices("USB").Selected = True

      ' check the index of YUY2 320 x 240 video
      Dim i As Integer = videoformats.IndexOf("{32595559-0000-0010-8000-00AA00389B71}", 320, 240)

      ' access the format via the collection indexer
      Dim vf As VideoFormat = videoformats(i)

      ' check if the collection contains this format 
      ' (it should we just got it with IndexOf above)
      If videoformats.Contains(vf) Then
         ' set the result to what we expect
         _result = True
      End If
   Catch e1 As Exception
      _result = False
   End Try
End Sub

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;

   // reference the video formats object
   VideoFormats videoformats = capturectrl.VideoCaptureFormats;

   try
   {
      // select a video device, use your device name here instead of USB
      if (capturectrl.VideoDevices["USB"] == null)
         throw new Exception("No USB video device available");

      capturectrl.VideoDevices["USB"].Selected = true;

      // check the index of YUY2 320 x 240 video
      int i = videoformats.IndexOf("{32595559-0000-0010-8000-00AA00389B71}", 320, 240);

      // access the format via the collection indexer
      VideoFormat vf = videoformats[i];

      // check if the collection contains this format 
      // (it should we just got it with IndexOf above)
      if (videoformats.Contains(vf))
      {
         // set the result to what we expect
         _result = true;
      }
   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms

Reference

VideoFormats Class
VideoFormats Members
Overload List