Count Property (TargetVideoFormats)

Visual Basic
C#
C++/CLI

'Declaration
 
Public ReadOnly Property Count As Integer

'Usage
 
Dim instance As TargetVideoFormats
Dim value As Integer
 
value = instance.Count

public int Count {get;}

public:
property int Count {
   int get();
}

Property Value

The number of items contained in the collection.

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

Copy Code

Imports Leadtools
Imports Leadtools.MediaFoundation
Imports LeadtoolsMediaFoundationExamples.Fixtures

Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public _result As Boolean = False
Public Sub CountResetExample()
   Try
      ' reference the form capture control 
      Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

      ' reference the target formats
      Dim formats As TargetFormats = capturectrl.TargetFormats

      ' reference the target format object
      Dim tf As TargetFormat = formats(TargetFormatType.MP4)

      ' reference the target video formats object
      Dim tvformats As TargetVideoFormats = tf.VideoFormats

      ' get count before setting device
      Dim n As Integer = tvformats.Count

      ' set an video device first, you should use your video device name here
      If capturectrl.VideoDevices("USB") Is Nothing Then
         Throw New Exception("No USB video device available")
      End If

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

      ' reset the collection
      tvformats.Reset()

      ' set out result to what we expect 
      _result = (n > 0)
   Catch e1 As Exception
      _result = False
   End Try
End Sub

using Leadtools;
using Leadtools.MediaFoundation;
using LeadtoolsMediaFoundationExamples.Fixtures;

public CaptureCtrlForm _form = new CaptureCtrlForm();
public bool _result = false;
public void CountResetExample()
{
   try
   {
      // reference the form capture control 
      CaptureCtrl capturectrl = _form.CaptureCtrl;

      // reference the target formats
      TargetFormats formats = capturectrl.TargetFormats;

      // reference the target format object
      TargetFormat tf = formats[TargetFormatType.MP4];

      // reference the target video formats object
      TargetVideoFormats tvformats = tf.VideoFormats;

      // get count before setting device
      int n = tvformats.Count;

      // set an video device first, you should use your video device name here
      if (capturectrl.VideoDevices["USB"] == null)
         throw new Exception("No USB video device available");

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

      // reset the collection
      tvformats.Reset();

      // set out result to what we expect 
      _result = (n > 0);
   }
   catch (Exception)
   {
      _result = false;
   }
}

Target Platforms

Reference

TargetVideoFormats Class
TargetVideoFormats Members