VideoSubChannelCount Property

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

public int VideoSubChannelCount {get;}

'Declaration
 
Public ReadOnly Property VideoSubChannelCount As Integer

'Usage
 
Dim instance As TVTuner
Dim value As Integer
 
value = instance.VideoSubChannelCount

public int VideoSubChannelCount {get;}

 get_VideoSubChannelCount();

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

Property Value

A value representing the video subchannel count.

Gets the video subchannel count for a multifunction tuner. This property is valid only for ATSC digital TV broadcasts.

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

Copy Code

Public _result As Boolean = False
Public _form As CaptureCtrlForm = New CaptureCtrlForm()
Public Sub AudioSubChannelCountExample()
   ' reference the forms capture control and tv tuner
   Dim capturectrl As CaptureCtrl = _form.CaptureCtrl

   Try
      ' select the first device with analog in it's name
      ' Replace "Analog" with your video capture device name
      If capturectrl.VideoDevices("Digital") Is Nothing Then
         Throw New Exception("No Digital video devices available!")
      End If

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

      ' get the TV Tuner device
      Dim tvtuner As TVTuner = capturectrl.TVTuner

      ' Check if TV tuner is valid
      If Not tvtuner Is Nothing Then
         ' try to set the channel and check the subchannel countss
         tvtuner.SetChannel(101, -1, -1)
         Dim videoSubChannelCount As Integer = tvtuner.VideoSubChannelCount
         Dim audioSubChannelCount As Integer = tvtuner.AudioSubChannelCount

         ' set the result
         _result = True
      End If
   Catch e1 As Exception
      _result = False
   End Try

   ' we'll loop on the state and pump messages for this example.
   ' but you should not need to if running from a Windows Forms application.
   Do While capturectrl.State = CaptureState.Running
      Application.DoEvents()
   Loop
End Sub

public bool _result = false;
public CaptureCtrlForm _form = new CaptureCtrlForm();
public void AudioSubChannelCountExample()
{
   // reference the forms capture control and tv tuner
   CaptureCtrl capturectrl = _form.CaptureCtrl;

   try
   {
      // select the first device with analog in it's name
      // Replace "Analog" with your video capture device name
      if (capturectrl.VideoDevices["Digital"] == null)
         throw new Exception("No Digital video devices available!");

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

      // get the TV Tuner device
      TVTuner tvtuner = capturectrl.TVTuner;

      // check whether the TV tuner is valid
      if (tvtuner != null)
      {
         // try to set the channel and check the subchannel countss
         tvtuner.SetChannel(101, -1, -1);
         int videoSubChannelCount = tvtuner.VideoSubChannelCount;
         int audioSubChannelCount = tvtuner.AudioSubChannelCount;

         // set the result
         _result = true;
      }
   }
   catch (Exception)
   {
      _result = false;
   }

   // we'll loop on the state and pump messages for this example.
   // but you should not need to if running from a Windows Forms application.
   while (capturectrl.State == CaptureState.Running)
      Application.DoEvents();
}

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

TVTuner Class
TVTuner Members